Information Exposure Through Timing Discrepancy in SCRAM - CVE-2025-59432

Vulnerability identifier: #VU117375

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N]

CVE-ID: CVE-2025-59432

CWE-ID: CWE-208

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exist due to timing discrepancy when using Arrays.equals to compare secret values such as client proofs and server signatures. A remote attacker can perform a timing side-channel attack and gain access to sensitive information. 

SCRAM
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
Server Applications Module
openSUSE Leap
openEuler
Enterprise Build of Quarkus
ongres-scram
ongres-scram-parent
ongres-scram-help
ongres-scram-client
ongres-scram-javadoc

Install updates from vendor's website.

SCRAM - update to 3.2
Enterprise Build of Quarkus - update to 3.27.2
ongres-scram - addressed in versions 2.1-2, 2.1-3
ongres-scram-parent - addressed in versions 2.1-2, 2.1-3
ongres-scram-help - addressed in versions 2.1-2, 2.1-3
ongres-scram-client - addressed in versions 2.1-2, 2.1-3
ongres-scram-client - update to 2.1-150400.8.5.1
ongres-scram-parent - update to 2.1-150400.8.5.1
ongres-scram - update to 2.1-150400.8.5.1
ongres-scram-javadoc - update to 2.1-150400.8.5.1

• https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/security/MessageDigest.html#isEqual(byte%5B%5D,byte%5B%5D)
• https://github.com/ongres/scram/commit/f04975680d4a67bc84cc6c61bbffd5186223e2e2
• https://github.com/ongres/scram/security/advisories/GHSA-3wfh-36rx-9537

• Timing side-channel attack in SCRAM Java implementation
• openEuler 24.03 LTS SP1 update for ongres-scram
• openEuler 24.03 LTS update for ongres-scram
• openEuler 22.03 LTS SP4 update for ongres-scram
• openEuler 22.03 LTS SP3 update for ongres-scram
• openEuler 20.03 LTS SP4 update for ongres-scram
• openEuler 24.03 LTS SP2 update for ongres-scram
• SUSE update for ongres-scram
• Multiple vulnerabilities in IBM Enterprise Build of Quarkus