Rewterz Threat Advisory – Multiple Cisco Vulnerabilities

Severity

Medium

Analysis Summary

CVE-2021-40122

Cisco Meeting Server is vulnerable to a denial of service, caused by improper handling of large series of message requests. By sending specially-crafted messages, a remote attacker could exploit this vulnerability to cause the device to reload, dropping all ongoing calls and results in a denial of service condition.

CVE-2021-34736

Cisco Integrated Management Controller (IMC) Software is vulnerable to a denial of service, caused by improper input validation by the web-based management interface. By sending a specially-crafted HTTP request, a remote attacker could exploit this vulnerability to cause the interface to restart, and results in a denial of service condition.

CVE-2021-40123

Cisco Identity Services Engine could allow a remote authenticated attacker to obtain sensitive information, caused by an incorrect permissions settings flaw. By sending a specially-crafted HTTP request, an attacker could exploit this vulnerability to download restricted files, and use this information to launch further attacks against the affected system.

Impact

• Denial of Service
• Information Disclosure

Affected Vendors

Cisco

Affected Products

• Cisco Meeting Server
• Cisco Integrated Management Controller
• Cisco UCS C-Series Rack Servers in standalone mode
• Cisco UCS S-Series Storage Servers in standalone mode
• Cisco Identity Services Engine (ISE)

Remediation

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

CVE-2021-40122

CVE-2021-34736

CVE-2021-40123