VAR-201411-0246

Vulnerability from variot - Updated: 2025-04-13 23:22

The Remote Mobile Access Subsystem in Cisco Unified Communications Manager (CM) 10.0(1) and earlier does not properly validate the Subject Alternative Name (SAN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof VCS core devices via a crafted certificate issued by a legitimate Certification Authority, aka Bug ID CSCuq86376. Cisco Unified Communications Manager is prone to a security-bypass vulnerability. An attacker can exploit this issue to perform man-in-the-middle attacks or impersonate trusted servers, which will aid in further attacks. This issue is being tracked by Cisco Bug ID CSCuq86376. This component provides a scalable, distributed and highly available enterprise IP telephony call processing solution. There is a security vulnerability in the Remote Mobile Access Subsystem of CUCM 10.0(1) and earlier versions. The vulnerability is caused by the fact that the program does not correctly verify the Subject Alternative Name (SAN) field of the X.509 certificate

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