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CVE-2023-4612

Apereo Central Authentication Service authentication bypass

9.8 CRITICALEPSS 0.94%
  1. Published9 Nov 2023

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 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Apereo Central Authentication Service< 7.0.0 · 7.0.0

Remediation

Fixed in
Apereo Central Authentication Service≥ 7.0.0

Frequently asked

Is CVE-2023-4612 being actively exploited?

CVE-2023-4612 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.94%.

How severe is CVE-2023-4612?

CVE-2023-4612 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.94% probability of exploitation.

Which products are affected by CVE-2023-4612?

Affected products include Apereo Central Authentication Service.

How do I fix CVE-2023-4612?

Upgrade affected software to a fixed version, for example Apereo Central Authentication Service 7.0.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-4612 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.