MFA bypass in Apereo CAS
CVE-2023-4612

9.8CRITICAL

Key Information:

Vendor

Apereo Foundation

Status
Cas
Vendor
CVE Published:
9 November 2023

What is CVE-2023-4612?

An improper authentication vulnerability exists in Apereo CAS allowing unauthorized bypass of Multi-Factor Authentication. This issue is specifically linked to the method jakarta.servlet.http.HttpServletRequest.getRemoteAddr, which can be exploited to bypass security measures. As of now, the vulnerability affects all versions of CAS through 7.0.0-RC7, and there is no official patch or treatment from the vendor. Future releases may or may not remediate the issue.

Affected Version(s)

CAS 0 <= 7.0.0-RC7

References

https://cert.pl/posts/2023/11/CVE-2023-4612/
third-party-advisory
https://cert.pl/en/posts/2023/11/CVE-2023-4612/
third-party-advisory

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Maksym Brzęczek (efigo.pl)
.