Security Alerts

AA21-200A: Tactics, Techniques, and Procedures of Indicted APT40 Actors Associated with China’s MSS Hainan State Security Department

US-CERT - Mon, 2021-07-19 04:00
Original release date: July 19, 2021
Summary

This Joint Cybersecurity Advisory was written by the Federal Bureau of Investigation (FBI) and the Cybersecurity and Infrastructure Security Agency (CISA) to provide information on a Chinese Advanced Persistent Threat (APT) group known in open-source reporting as APT40. This advisory provides APT40’s tactics, techniques, and procedures (TTPs) and indicators of compromise (IOCs) to help cybersecurity practitioners identify and remediate APT40 intrusions and established footholds.

APT40—aka BRONZE MOHAWK, FEVERDREAM, G0065, Gadolinium, GreenCrash, Hellsing, Kryptonite Panda, Leviathan, MUDCARP, Periscope, Temp.Periscope, and Temp.Jumper—is located in Haikou, Hainan Province, People’s Republic of China (PRC), and has been active since at least 2009. APT40 has targeted governmental organizations, companies, and universities in a wide range of industries—including biomedical, robotics, and maritime research—across the United States, Canada, Europe, the Middle East, and the South China Sea area, as well as industries included in China’s Belt and Road Initiative.

On July 19, 2021, the U.S. Department of Justice (DOJ) unsealed an indictment against four APT40 cyber actors for their illicit computer network exploitation (CNE) activities via front company Hainan Xiandun Technology Development Company (Hainan Xiandun). Hainan Xiandun employee Wu Shurong cooperated with and carried out orders from PRC Ministry of State Security (MSS) Hainan State Security Department (HSSD) intelligence officers Ding Xiaoyang, Zhu Yunmin, and Cheng Qingmin to conduct CNE. Wu’s CNE activities resulted in the theft of trade secrets, intellectual property, and other high-value information from companies and organizations in the United States and abroad, as well as from multiple foreign governments. These MSS-affiliated actors targeted victims in the following industries: academia, aerospace/aviation, biomedical, defense industrial base, education, government, healthcare, manufacturing, maritime, research institutes, and transportation (rail and shipping).

Click here for a PDF version of this report.

Technical Details

This Joint Cybersecurity Advisory uses the MITRE ATT&CK® framework, version 9. See the ATT&CK for Enterprise framework for all referenced threat actor tactics and techniques.

APT40 [G0065] has used a variety of tactics and techniques and a large library of custom and open-source malware—much of which is shared with multiple other suspected Chinese groups—to establish initial access via user and administrator credentials, enable lateral movement once inside the network, and locate high value assets in order to exfiltrate data. Table 1 provides details on these tactics and techniques. Note: see the appendix for a list of the domains, file names, and malware MD5 hash values used to facilitate this activity.

Table 1: APT40 ATT&CK Tactics and Techniques

Tactics Activities and Techniques  Reconnaissance [TA0043]
 and
 Resource Development [TA0042]
  • Gathered victim identity information [T1589] by collecting compromised credentials [T1589.001
  • Acquire infrastructure [T1583] to establish domains that impersonate legitimate entities [T1583.001], aka ‘typosquatting’, to use in watering hole attacks and as command and control (C2) [TA0011] infrastructure
  • Establish new [T1585.002] and compromise existing [T1586.002] email and social media accounts [1585.001] to conduct social engineering attacks
 Initial Access [TA0001]
  • External remote services (e.g., virtual private network [VPN] services) [T1133]
  • Spearphishing emails with malicious attachments [T1566.001] and links [T1566.002]
  • Drive-by compromises [T1189] and exploitation of public-facing applications [T1190]
  • Access to valid [T1078], compromised administrative [T1078.001] accounts
 Execution [TA0002]  
  • Command and scripting interpreters [T1059] such as PowerShell [T1059.001]
  • Exploitation of software vulnerabilities in client applications to execute code [T1203] using lure documents that dropped malware exploiting various Common Vulnerabilities and Exposures (CVEs)
  • User execution [T1204] of malicious files [T1204.002] and links [T1566.002] attached to spearphishing emails [T1566.001]
 Persistence [TA0003],
 Privilege Escalation
[TA0004],
 Credential Access
[TA0006],
 Discovery
[TA0007],
 and
 Lateral Movement [TA0008]

APT40 has used a combination of tool frameworks and malware to establish persistence, escalate privileges, map, and move laterally on victim networks. Additionally, APT40 conducted internal spearphishing attacks [T1534].

  • BADFLICK/Greencrash
  • China Chopper [S0020]
  • Cobalt Strike [S0154]
  • Derusbi/PHOTO [S0021]
  • Gh0stRAT [S0032]
  • GreenRAT
  • jjdoor/Transporter
  • jumpkick
  • Murkytop (mt.exe) [S0233]
  • NanHaiShu [S0228]
  • Orz/AirBreak [S0229]
  • PowerShell Empire [S0363]
  • PowerSploit [S0194]
  • Server software component: Web Shell [TA1505.003]
 Defense Evasion [TA0005],
 Command and Control
[TA0011],
 Collection
[TA0009],
 and
 Exfiltration [TA0010]  
  • Use of steganography [T1027.003] to hide stolen data inside other files stored on GitHub
  • Protocol impersonation [T1001.003] by using Application Programming Interface (API) keys for Dropbox accounts in commands to upload stolen data to make it appear that the activity was a legitimate use of the Dropbox service
  • Protocol tunneling [T1572] and multi-hop proxies [T1090.003], including the use of Tor [S0183]
  • Use of domain typosquatting for C2 infrastructure [T1583.001]
  • Archive [T1560], encrypt [T1532], and stage collected data  locally [T1074.001] and remotely [T1074.002] for exfiltration
  • Exfiltration over C2 channel [T1041]
MitigationsNetwork Defense-in-Depth

Proper network defense-in-depth and adherence to information security best practices can assist in mitigating the threat and reducing the risk. The following guidance may assist organizations in developing network defense procedures.

Patch and Vulnerability Management
  • Install vendor-provided and verified patches on all systems for critical vulnerabilities, prioritizing timely patching of internet-connected servers and software processing internet data—such as web browsers, browser plugins, and document readers.
  • Ensure proper migrating steps or compensating controls are implemented for vulnerabilities that cannot be patched in a timely manner.
  • Maintain up-to-date antivirus signatures and engines.
  • Routinely audit configuration and patch management programs to ensure the ability to track and mitigate emerging threats. Implementing a rigorous configuration and patch management program will hamper sophisticated cyber threat actors’ operations and protect resources and information systems.
  • Review the articles in the References section for more information on Chinese APT exploitation of common vulnerabilities.
Protect Credentials
  • Strengthen credential requirements, regularly change passwords, and implement multi-factor authentication to protect individual accounts, particularly for webmail and VPN access and for accounts that access critical systems. Do not reuse passwords for multiple accounts. 
  • Audit all remote authentications from trusted networks or service providers.
  • Detect mismatches by correlating credentials used within internal networks with those employed on external-facing systems.
  • Log use of system administrator commands such as net, ipconfig, and ping.
  • Enforce principle of least privilege.
Network Hygiene and Monitoring
  • Actively scan and monitor internet-accessible applications for unauthorized access, modification, and anomalous activities. 
  • Actively monitor server disk use and audit for significant changes.
  • Log Domain Name Service (DNS) queries and consider blocking all outbound DNS requests that do not originate from approved DNS servers. Monitor DNS queries for C2 over DNS.
  • Develop and monitor the network and system baselines to allow for the identification of anomalous activity. Audit logs for suspicious behavior.
  • Identify and suspend access of users exhibiting unusual activity.
  • Use allowlist or baseline comparison to monitor Windows event logs and network traffic to detect when a user maps a privileged administrative share on a Windows system.
  • Leverage multi-sourced threat-reputation services for files, DNS, URLs, IP addresses, and email addresses.
  • Network device management interfaces—such as Telnet, Secure Shell (SSH), Winbox, and HTTP—should be turned off for wide area network (WAN) interfaces and secured with strong passwords and encryption when enabled.
  • When possible, segment critical information on air-gapped systems. Use strict access control measures for critical data. 
APPENDIX: APT40 Indicators of Compromise

APT40 used the following domains, file names, and malware MD5 hash values to facilitate the CNE activity outlined in this CSA between 2009 through 2018.

 

Domains airbusocean[.]com https://pastebin[.]com/vfb5mbbu pacifichydrologic[.]org cargillnotice[.]com huntingtomingalls[.]com philippinenewss[.]com ccidmeekparry[.]info indiadigest[.]in philstarnotice[.]com ccvzvhjhdf[.]website jack-newnb[.]com porndec143.chickenkiller[.]com cdigroups[.]com kAty197.chickenkiller[.]com santaclarasystem[.]us checkecc[.]com louisdreyfu[.]com scsnewstoday[.]com chemscalere[.]com mail2.ignorelist[.]com secbkav[.]com cnnzapmeta[.]com masterroot[.]pw Soure7788.chickenkiller[.]com corycs[.]com microsql-update[.]info tccoll[.]com deltektimes[.]com mihybb[.]com teledynegroup[.]com Engaction[.]com mlcdailynews[.]com teledyneinstrument[.]com ens-smithjonathan.rhcloud[.]com movyaction[.]net testdomain2019.chickenkiller[.]com fishgatesite.wordpress[.]com msusanode[.]com thestar[.]live goo2k88yyh2.chickenkiller[.]com newbb-news[.]com thrivedataview[.]com gttdoskip[.]com nfmybb[.]com thyssemkrupp[.]com http://gkimertds.wordpress[.]com/feed/ nmw4xhipveaca7hm[.]onion.link/en_US/all.js thyssenkrupp-marinesystems[.]org http://stackoverflow[.]com/users/3627469/angle-swift nobug[.]uk.to togetno992.mooo[.]com http://stackoverflow[.]com/users/3804206/swiftr-angle notesof992.wordpress[.]com tojenner97.chickenkiller[.]com http://stackoverflow[.]com/users/3863346/gkimertdssdads onlinenewspapers[.]club trafficeco[.]com vser.mooo[.]com onlineobl[.]com transupdate[.]com https://pastebin[.]com/p1mktQpD oyukg43t[.]website troubledate[.]com ultrasocial[.]info wsmcoff[.]com xbug.uk[.]to usdagroup[.]com www.yorkshire-espana-sa[.]com/english/servicios/ yootypes[.]com   https://github[.]com/slotz/sharp-loader/commit/f9de338fb474fd970a7375030642d04179b9245d    

MD5 Malware Hashes  

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Contact Information

To report suspicious or criminal activity related to information found in this Joint Cybersecurity Advisory, contact your local FBI field office at www.fbi.gov/contact-us/field, or the FBI’s 24/7 Cyber Watch (CyWatch) at (855) 292-3937 or by email at CyWatch@fbi.gov. When available, please include the following information regarding the incident: date, time, and location of the incident; type of activity; number of people affected; type of equipment used for the activity; the name of the submitting company or organization; and a designated point of contact. To request incident response resources or technical assistance related to these threats, contact CISA at CISAServiceDesk@cisa.dhs.gov.

References Revisions
  • July 19, 2021: Initial version

This product is provided subject to this Notification and this Privacy & Use policy.

Categories: Security Alerts

Cisco Integrated Management Controller Open Redirect Vulnerability

Cisco Security Advisories - Fri, 2021-07-16 17:37

A vulnerability in the web-based management interface of Cisco Integrated Management Controller (IMC) Software could allow an unauthenticated, remote attacker to redirect a user to a malicious web page.

This vulnerability is due to improper input validation of the parameters in an HTTP request. An attacker could exploit this vulnerability by persuading a user to click a crafted link. A successful exploit could allow the attacker to redirect a user to a malicious website. This vulnerability is known as an open redirect attack, which is used in phishing attacks to get users to visit malicious sites without their knowledge.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-imc-openred-zAYrU6d2


Security Impact Rating: Medium
CVE: CVE-2021-1397
Categories: Security Alerts

Cisco Adaptive Security Appliance Software Release 9.16.1 and Cisco Firepower Threat Defense Software Release 7.0.0 IPsec Denial of Service Vulnerability

Cisco Security Advisories - Thu, 2021-07-15 16:00

A vulnerability in the software cryptography module of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker or an unauthenticated attacker in a man-in-the-middle position to cause an unexpected reload of the device that results in a denial of service (DoS) condition.

The vulnerability is due to a logic error in how the software cryptography module handles specific types of decryption errors. An attacker could exploit this vulnerability by sending malicious packets over an established IPsec connection. A successful exploit could cause the device to crash, forcing it to reload. Important: Successful exploitation of this vulnerability would not cause a compromise of any encrypted data.

Note: This vulnerability affects only Cisco ASA Software Release 9.16.1 and Cisco FTD Software Release 7.0.0.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-ipsec-dos-TFKQbgWC


Security Impact Rating: High
CVE: CVE-2021-1422
Categories: Security Alerts

Cisco Intelligent Proximity SSL Certificate Validation Vulnerability

Cisco Security Advisories - Thu, 2021-07-15 14:50

A vulnerability in the SSL implementation of the Cisco Intelligent Proximity solution could allow an unauthenticated, remote attacker to view or alter information shared on Cisco Webex video devices and Cisco collaboration endpoints if the products meet the conditions described in the Vulnerable Products section.

The vulnerability is due to a lack of validation of the SSL server certificate received when establishing a connection to a Cisco Webex video device or a Cisco collaboration endpoint. An attacker could exploit this vulnerability by using man in the middle (MITM) techniques to intercept the traffic between the affected client and an endpoint, and then using a forged certificate to impersonate the endpoint. Depending on the configuration of the endpoint, an exploit could allow the attacker to view presentation content shared on it, modify any content being presented by the victim, or have access to call controls.

This vulnerability does not affect cloud registered collaboration endpoints.

There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-proximity-ssl-cert-gBBu3RB


Security Impact Rating: High
CVE: CVE-2020-3155
Categories: Security Alerts

Cisco NX-OS Software Command Injection Vulnerability (CVE-2019-1735)

Cisco Security Advisories - Mon, 2021-07-12 14:24

A vulnerability in the CLI of Cisco NX-OS Software could allow an authenticated, local attacker to execute arbitrary commands with elevated privileges on the underlying operating system of an affected device.

The vulnerability is due to insufficient validation of arguments passed to certain CLI commands. An attacker could exploit this vulnerability by including malicious input as the argument of an affected command. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system with elevated privileges. An attacker would need valid user credentials to exploit this vulnerability.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-cmdinj-1735


Security Impact Rating: Medium
CVE: CVE-2019-1735
Categories: Security Alerts

Cisco FXOS and NX-OS Software Secure Configuration Bypass Vulnerability

Cisco Security Advisories - Mon, 2021-07-12 14:24

A vulnerability in the Secure Configuration Validation functionality of Cisco FXOS Software and Cisco NX-OS Software could allow an authenticated, local attacker to run arbitrary commands at system boot time with the privileges of root.

The vulnerability is due to a lack of proper validation of system files when the persistent configuration information is read from the file system. An attacker could exploit this vulnerability by authenticating to the device and overwriting the persistent configuration storage with malicious executable files. An exploit could allow the attacker to run arbitrary commands at system startup and those commands will run as the root user. The attacker must have valid administrative credentials for the device.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-conf-bypass


Security Impact Rating: Medium
CVE: CVE-2019-1728
Categories: Security Alerts

Cisco FXOS and NX-OS Software Simple Network Management Protocol Denial of Service Vulnerability

Cisco Security Advisories - Mon, 2021-07-12 14:24

A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause the SNMP application to leak system memory, which could cause an affected device to restart unexpectedly.

The vulnerability is due to improper error handling when processing inbound SNMP packets. An attacker could exploit this vulnerability by sending multiple crafted SNMP packets to an affected device. A successful exploit could allow the attacker to cause the SNMP application to leak system memory because of an improperly handled error condition during packet processing. Over time, this memory leak could cause the SNMP application to restart multiple times, leading to a system-level restart and a denial of service (DoS) condition.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-snmp-dos


Security Impact Rating: High
CVE: CVE-2019-1858
Categories: Security Alerts

Cisco IOS and IOS XE Software Bidirectional Forwarding Detection Denial of Service Vulnerability

Cisco Security Advisories - Thu, 2021-07-08 17:26

A vulnerability in the Bidirectional Forwarding Detection (BFD) offload implementation of Cisco Catalyst 4500 Series Switches and Cisco Catalyst 4500-X Series Switches could allow an unauthenticated, remote attacker to cause a crash of the iosd process, causing a denial of service (DoS) condition.

The vulnerability is due to insufficient error handling when the BFD header in a BFD packet is incomplete. An attacker could exploit this vulnerability by sending a crafted BFD message to or across an affected switch. A successful exploit could allow the attacker to trigger a reload of the system.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-bfd

This advisory is part of the March 28, 2018, release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication, which includes 20 Cisco Security Advisories that describe 22 vulnerabilities. For a complete list of the advisories and links to them, see Cisco Event Response: March 2018 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication.


Security Impact Rating: High
CVE: CVE-2018-0155
Categories: Security Alerts

Cisco Adaptive Security Device Manager Remote Code Execution Vulnerability

Cisco Security Advisories - Wed, 2021-07-07 16:00

A vulnerability in the Cisco Adaptive Security Device Manager (ASDM) Launcher could allow an unauthenticated, remote attacker to execute arbitrary code on a user's operating system.

This vulnerability is due to a lack of proper signature verification for specific code exchanged between the ASDM and the Launcher. An attacker could exploit this vulnerability by leveraging a man-in-the-middle position on the network to intercept the traffic between the Launcher and the ASDM and then inject arbitrary code. A successful exploit could allow the attacker to execute arbitrary code on the user's operating system with the level of privileges assigned to the ASDM Launcher. A successful exploit may require the attacker to perform a social engineering attack to persuade the user to initiate communication from the Launcher to the ASDM.

There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asdm-rce-gqjShXW


Security Impact Rating: Medium
CVE: CVE-2021-1585
Categories: Security Alerts

Cisco Virtualized Voice Browser Cross-Site Scripting Vulnerability

Cisco Security Advisories - Wed, 2021-07-07 16:00

A vulnerability in the web-based management interface of Cisco Virtualized Voice Browser could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface.

This vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user of an affected interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vvb-xss-wG4zXRp3


Security Impact Rating: Medium
CVE: CVE-2021-1575
Categories: Security Alerts

Cisco Web Security Appliance Privilege Escalation Vulnerability

Cisco Security Advisories - Wed, 2021-07-07 16:00

A vulnerability in the configuration management of Cisco AsyncOS for Cisco Web Security Appliance (WSA) could allow an authenticated, remote attacker to perform command injection and elevate privileges to root.

This vulnerability is due to insufficient validation of user-supplied XML input for the web interface. An attacker could exploit this vulnerability by uploading crafted XML configuration files that contain scripting code to a vulnerable device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system and elevate privileges to root. An attacker would need a valid user account with the rights to upload configuration files to exploit this vulnerability.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-scr-web-priv-esc-k3HCGJZ


Security Impact Rating: High
CVE: CVE-2021-1359
Categories: Security Alerts

Cisco Identity Services Engine Stored Cross-Site Scripting Vulnerabilities

Cisco Security Advisories - Wed, 2021-07-07 16:00

Multiple vulnerabilities in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user.

These vulnerabilities exist because the web-based management interface does not sufficiently validate user-supplied input. An attacker could exploit these vulnerabilities by injecting malicious code into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. To exploit these vulnerabilities, the attacker would need valid administrative credentials.

Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-stored-xss-TWwjVPdL


Security Impact Rating: Medium
CVE: CVE-2021-1603,CVE-2021-1604,CVE-2021-1605,CVE-2021-1606,CVE-2021-1607
Categories: Security Alerts

Cisco Video Surveillance 7000 Series IP Cameras Link Layer Discovery Protocol Memory Leak Vulnerabilities

Cisco Security Advisories - Wed, 2021-07-07 16:00

Multiple vulnerabilities in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Video Surveillance 7000 Series IP Cameras could allow an unauthenticated, adjacent attacker to cause a memory leak, which could lead to a denial of service (DoS) condition on an affected device.

These vulnerabilities are due to incorrect processing of certain LLDP packets at ingress time. An attacker could exploit these vulnerabilities by sending crafted LLDP packets to an affected device. A successful exploit could allow the attacker to cause the affected device to continuously consume memory, which could cause the device to crash and reload, resulting in a DoS condition.

Note: LLDP is a Layer 2 protocol. To exploit these vulnerabilities, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).

Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipcamera-lldp-mem-wGqundTq


Security Impact Rating: Medium
CVE: CVE-2021-1595,CVE-2021-1596,CVE-2021-1597,CVE-2021-1598
Categories: Security Alerts

Cisco BroadWorks Application Server Information Disclosure Vulnerability

Cisco Security Advisories - Wed, 2021-07-07 16:00

A vulnerability in the XSI-Actions interface of Cisco BroadWorks Application Server could allow an authenticated, remote attacker to access sensitive information on an affected system.

This vulnerability is due to improper input validation and authorization of specific commands that a user can execute within the XSI-Actions interface. An attacker could exploit this vulnerability by authenticating to an affected device and issuing a specific set of commands. A successful exploit could allow the attacker to join a Call Center instance and have calls that they do not have permissions to access distributed to them from the Call Center queue.

At the time of publication, Cisco had not released updates that address this vulnerability for Cisco BroadWorks Application Server. However, firmware patches are available. There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-broad-as-inf-disc-ZUXGFFXQ


Security Impact Rating: Medium
CVE: CVE-2021-1562
Categories: Security Alerts

Broadcom MediaxChange Vulnerability Affecting Cisco Products: July 2021

Cisco Security Advisories - Wed, 2021-07-07 16:00

A vulnerability in the TrustZone implementation in certain Broadcom MediaxChange firmware was reported by security researchers. To exploit this vulnerability on the affected Cisco products, the attacker would need to dismount the backplate of the device and trigger a specific series of impulses on the chipset. This would reload the device in a special mode allowing access to the bootshell. The attacker would then issue specific commands with crafted parameters in the bootshell, which would trigger the vulnerability. Exploitation of this vulnerability could result in arbitrary code execution with privilege escalation.

At the time of publication, a link to the details about this vulnerability was not available.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-brcm-mxc-jul2021-26LqUZUh


Security Impact Rating: Medium
CVE: CVE-2021-33478
Categories: Security Alerts

Cisco Business Process Automation Privilege Escalation Vulnerabilities

Cisco Security Advisories - Wed, 2021-07-07 16:00

Multiple vulnerabilities in the web-based management interface of Cisco Business Process Automation (BPA) could allow an authenticated, remote attacker to elevate privileges to Administrator.

These vulnerabilities are due to improper authorization enforcement for specific features and for access to log files that contain confidential information. An attacker could exploit these vulnerabilities either by submitting crafted HTTP messages to an affected system and performing unauthorized actions with the privileges of an administrator, or by retrieving sensitive data from the logs and using it to impersonate a legitimate privileged user. A successful exploit could allow the attacker to elevate privileges to Administrator.

Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bpa-priv-esc-dgubwbH4


Security Impact Rating: High
CVE: CVE-2021-1574,CVE-2021-1576
Categories: Security Alerts

Multiple Vulnerabilities in OpenSSL Affecting Cisco Products: March 2021

Cisco Security Advisories - Tue, 2021-07-06 19:43

On March 25, 2021, the OpenSSL Project released a security advisory, OpenSSL Security Advisory [25 March 2021], that disclosed two vulnerabilities.

Exploitation of these vulnerabilities could allow an attacker to use a valid non-certificate authority (CA) certificate to act as a CA and sign a certificate for an arbitrary organization, user or device, or to cause a denial of service (DoS) condition.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-openssl-2021-GHY28dJd


Security Impact Rating: High
CVE: CVE-2021-3449,CVE-2021-3450
Categories: Security Alerts

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