CVE-2024-20375: unified Memory Corruption — Fix

Description

A vulnerability in the SIP call processing function of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper parsing of SIP messages. An attacker could exploit this vulnerability by sending a crafted SIP message to an affected Cisco Unified CM or Cisco Unified CM SME device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition that interrupts the communications of reliant voice and video devices.

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CVSS v3.1 Score

8.6

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Weakness Type (CWE)

CWE-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
cisco	unified_communications_manager	All
cisco	unified_communications_manager	All
cisco	unified_communications_manager	All
cisco	unified_communications_manager	All
cisco	unified_communications_manager	All
cisco	unified_communications_manager	All
cisco	unified_communications_manager	All
cisco	unified_communications_manager	All
cisco	unified_communications_manager	All
cisco	unified_communications_manager	All
cisco	unified_communications_manager	All
cisco	unified_communications_manager	All
cisco	unified_communications_manager	All
cisco	unified_communications_manager	All
cisco	unified_communications_manager	All
cisco	unified_communications_manager	All

References

Advisories & Patches

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-dos-kkHq43We

Frequently Asked Questions

What is CVE-2024-20375? +

A vulnerability in the SIP call processing function of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper parsing of SIP messages. An attacker could exploit this vulnerability by sending a crafted SIP message to an affected Cisco Unified CM or Cisco Unified CM SME device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition that interrupts the communications of reliant voice and video devices. It has a CVSS v3.1 base score of 8.6 (HIGH).

How severe is CVE-2024-20375? +

CVE-2024-20375 has a CVSS v3.1 score of 8.6 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-20375? +

CVE-2024-20375 affects products from cisco, specifically: unified_communications_manager. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-20375? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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