CVE-2023-20232 — A vulnerability in the Tomcat implementation for Cisco Unified Contact Center Ex

A vulnerability in the Tomcat implementation for Cisco Unified Contact Center Express (Unified CCX) could allow an unauthenticated, remote attacker to cause a web cache poisoning attack on an affected device. This vulnerability is due to improper input validation of HTTP requests

01What is this vulnerability?

A vulnerability in the Tomcat implementation for Cisco Unified Contact Center Express (Unified CCX) could allow an unauthenticated, remote attacker to cause a web cache poisoning attack on an affected device. This vulnerability is due to improper input validation of HTTP requests. An attacker could exploit this vulnerability by sending crafted HTTP requests to a specific API endpoint on the…

02Affected products

Vendor	Product	Versions
Cisco	Cisco Unified Contact Center Express	8.5(1), 9.0(2)SU3ES04, 10.0(1)SU1, 10.0(1)SU1ES04, 10.5(1), 10.5(1)SU1, 10.5(1)SU1ES10, 10.6(1), 10.6(1)SU1, 10.6(1)SU3, 10.6(1)SU2, 10.6(1)SU3ES03, 10.6(1)SU2ES04, 10.6(1)SU3ES02, 10.6(1)SU3ES01, 11.0(1)SU1, 11.0(1)SU1ES03, 11.0(1)SU1ES02, 11.5(1)SU1, 11.5(1)SU1ES02, 11.5(1)SU1ES01, 11.5(1)SU1ES03, 11.5(1)ES01, 12.0(1), 12.0(1)ES01, 12.0(1)ES03, 12.0(1)ES04, 12.0(1)ES02, 12.5(1), 12.5(1)SU1, 12.5(1)SU2, 12.5(1)SU3, 12.5(1)_SU01_ES03, 12.5(1)ES03, 12.5(1)_SU01_ES01, 12.5(1)_SU02_ES02, 12.5(1)_SU01_ES02, 12.5(1)_SU02_ES03, 12.5(1)ES01, 12.5(1)_SU02_ES01, 12.5(1)ES02, 12.5(1)_SU03_ES01, 12.5(1)_SU02_ES04, 11.6(1), 11.6(2), 11.6(1)ES01, 11.6(2)ES06, 11.6(1)ES02, 11.6(2)ES01, 11.6(2)ES03, 11.6(2)ES07, 11.6(2)ES08, 11.6(2)ES02, 11.6(2)ES05, 11.6(2)ES04

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: 2023-08-16T21:39:51.815Z
• Last modified: 2024-08-02T09:05:35.898Z

09References

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