Rewterz Threat Advisory – Multiple Cisco Products Vulnerabilities

Severity

Medium

Analysis Summary

CVE-2021-34760 

Cisco TelePresence Management Suite is vulnerable to cross-site scripting, caused by improper validation of user-supplied input by the web-based management interface. A remote authenticated attacker could exploit this vulnerability to inject malicious script into a Web page which would be executed in a victim’s Web browser within the security context of the hosting Web site, once the page is viewed. An attacker could use this vulnerability to steal the victim’s cookie-based authentication credentials.

CVE-2021-34738 

Cisco Identity Services Engine is vulnerable to cross-site scripting, caused by improper validation of user-supplied input by web-based management interface. A remote attacker could exploit this vulnerability to execute script in a victim’s Web browser within the security context of the hosting Web site. An attacker could use this vulnerability to steal the victim’s cookie-based authentication credentials.

CVE-2021-40121 

Cisco Identity Services Engine is vulnerable to cross-site scripting, caused by improper validation of user-supplied input by web-based management interface. A remote attacker could exploit this vulnerability to execute script in a victim’s Web browser within the security context of the hosting Web site. An attacker could use this vulnerability to steal the victim’s cookie-based authentication credentials.

CVE-2021-1529 

Cisco IOS XE SD-WAN Software could allow a local authenticated attacker to execute arbitrary commands on the system, caused by improper input validation by the system CLI. By sending specially-crafted input to the system CLI, an attacker could exploit this vulnerability to execute arbitrary commands on the underlying operating system with root privileges.

CVE-2021-34743 

Cisco Webex Software Application is vulnerable to cross-site request forgery, caused by improper validation of user-supplied input. By persuading an authenticated user to visit a malicious Web site, a remote attacker could send a malformed HTTP request to read data from that user’s profile. An attacker could exploit this vulnerability to perform cross-site scripting attacks, Web cache poisoning, and other malicious activities.

Impact

• Cross-Site Scripting
• Command Execution
• Security Bypass

Affected Vendors

Cisco

Affected Products

• Cisco TelePresence Management Suite (TMS)
• Cisco Identity Services Engine 2.6
• Cisco Identity Services Engine 2.7
• Cisco Identity Services Engine 3.0
• Cisco IOS XE Software Cisco Cloud Services Router (CSR) 1000V Series
• Cisco IOS XE SD-WAN Software
• Cisco 1000 Series Integrated Services Routers (ISRs)
• Cisco 4000 Series ISRs
• Cisco ASR 1000 Series Aggregation Services Routers
• Cisco Catalyst 8000 Series Edge Platforms
• Cisco Webex Software

Remediation

Refer to Cisco Security Advisory for patch, upgrade, or suggested workaround information.

CVE-2021-34760

CVE-2021-34738

CVE-2021-40121

CVE-2021-1529

CVE-2021-34743