Critical severity · published Nov 9, 2023
CVE-2023-4612
MFA bypass in Apereo CAS
9.8
CVSS
1.1%
EPSS
No
On KEV
Description
Improper Authentication vulnerability in Apereo CAS in jakarta.servlet.http.HttpServletRequest.getRemoteAddr method allows Multi-Factor Authentication bypass.This issue affects CAS: through 7.0.0-RC7. It is unknown whether in new versions the issue will be fixed. For the date of publication there is no patch, and the vendor does not treat it as a vulnerability.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 66% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CA
CAS · Apereo Foundation
through 7.0.0-RC7 · source: vendor
CA
Central Authentication Service · Apereo
before 7.0.0; 7.0.0; 7.0.0; 7.0.0; 7.0.0; 7.0.0; +2 more · source: NVD