CVE-2023-20242 — A vulnerability in the web-based management interface of Cisco Unified Communica

A vulnerability in the web-based management interface of Cisco Unified Communications Manager (Unified CM), Cisco Unified CM Session Management Edition (Unified CM SME), and Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P) could allow a

01What is this vulnerability?

A vulnerability in the web-based management interface of Cisco Unified Communications Manager (Unified CM), Cisco Unified CM Session Management Edition (Unified CM SME), and Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P) could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. This…

02Affected products

Vendor	Product	Versions
Cisco	Cisco Unified Communications Manager	12.0(1)SU1, 12.0(1)SU2, 12.0(1)SU3, 12.0(1)SU4, 12.0(1)SU5, 12.5(1), 12.5(1)SU1, 12.5(1)SU2, 12.5(1)SU3, 12.5(1)SU4, 12.5(1)SU5, 12.5(1)SU6, 12.5(1)SU7, 12.5(1)SU7a, 12.5(1)SU8, 14, 14SU1, 14SU2, 14SU3
Cisco	Cisco Unified Communications Manager IM and Presence Service	N/A
Cisco	Cisco Unified Communications Manager / Cisco Unity Connection	10.5(2)SU10, 10.5(1), 10.5(1)SU1, 10.5(1)SU1a, 10.5(2), 10.5(2)SU1, 10.5(2)SU2, 10.5(2)SU3, 10.5(2)SU4, 10.5(2)SU5, 10.5(2)SU6, 10.5(2)SU7, 10.5(2)SU8, 10.5(2)SU9, 10.5(2)SU2a, 10.5(2)SU3a, 10.5(2)SU4a, 10.5(2)SU6a, 11.0(1), 11.0(1a), 11.0(1a)SU1, 11.0(1a)SU2, 11.0(1a)SU3, 11.0(1a)SU3a, 11.0(1a)SU4, 11.0.1, 11.0.2, 11.0.5, 11.5(1), 11.5(1)SU1, 11.5(1)SU2, 11.5(1)SU3, 11.5(1)SU3a, 11.5(1)SU3b, 11.5(1)SU4, 11.5(1)SU5, 11.5(1)SU6, 11.5(1)SU7, 11.5(1)SU8, 11.5(1)SU9, 11.5(1)SU10, 11.5(1)SU11, 10.0(1)SU2, 10.0(1), 10.0(1)SU1

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-08-16T20:59:25.126Z
• Last modified: 2024-08-02T09:05:35.954Z

09References

• sec.cloudapps.cisco.com — https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/ci…