SB2025060962 - Multiple vulnerabilities in Red Hat build of Keycloak 26.2

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Main Vulnerability Database SB2025060962

SB2025060962 - Multiple vulnerabilities in Red Hat build of Keycloak 26.2

Published: June 9, 2025

Security Bulletin ID SB2025060962
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Buffer overflow (CVE-ID: CVE-2024-47072)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error when processing unstrusted input. A remote attacker can pass a specially crafted stream to the application, trigger a stack overflow and perform a denial of service (DoS) attack.

Successful exploitation of this vulnerability requires that XStream is configured to use the BinaryStreamDriver.


2) Improper validation of certificate with host mismatch (CVE-ID: CVE-2025-3501)

The vulnerability allows a remote attacker to bypass implemented security restrictions. 

The vulnerability exists due to an error in org.keycloak.protocol.services package, when setting a verification policy to "ALL", which causes the application to skip trust store certificate verification. A remote attacker can perform MitM attack.


Remediation

Install update from vendor's website.

References