Detections
Analytics
Cisco Unified Communications Manager Remote Code Execution Vulnerability (regreSSHion) (cisco-sa-openssh-rce-2024)
high Nessus Plugin ID 312366
Language:
Synopsis
The remote device is missing a vendor-supplied security patch.Description
According to its self-reported version, Cisco Unified Communications Manager is affected by a vulnerability.- A remote code execution vulnerability exists in Cisco Unified Communications Manager due to a signal handler race condition found in sshd, where a client does not authenticate within LoginGraceTime seconds, after which the sshd SIGALRM handler is called asynchronously. An unauthenticated, remote attacker can exploit this to call various functions that are not async-signal-safe with root privileges. (CVE-2024-6387)
Please see the included Cisco BIDs and Cisco Security Advisory for more information.
Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID CSCwk62318See Also
Plugin Details
Severity: High
ID: 312366
File Name: cisco-sa-openssh-rce-2024-cucm.nasl
Version: 1.2
Type: Combined
Family: CISCO
Published: 5/6/2026
Updated: 5/7/2026
Configuration: Enable paranoid mode
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Critical
Score: 9.0
CVSS v2
Risk Factor: High
Base Score: 7.6
Temporal Score: 6
Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2024-6387
CVSS v3
Risk Factor: High
Base Score: 8.1
Temporal Score: 7.3
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: cpe:/a:cisco:unified_communications_manager
Required KB Items: Settings/ParanoidReport, Host/Cisco/CUCM/Version, Host/Cisco/CUCM/Version_Display
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 7/1/2024
Vulnerability Publication Date: 7/1/2024
Reference Information
CVE: CVE-2024-6387