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Security Advisories: GSA_kwCzR0hTQS05Z3JqLWo0M20tbWpxcs4AAs7n

Observable timing discrepancy allows determining username validity in Jenkins

In Jenkins 2.355 and earlier, LTS 2.332.3 and earlier, an observable timing discrepancy on the login form allows distinguishing between login attempts with an invalid username, and login attempts with a valid username and wrong password, when using the Jenkins user database security realm. This allows attackers to determine the validity of attacker-specified usernames.

Login attempts with an invalid username now validate a synthetic password to eliminate the timing discrepancy in Jenkins 2.356, LTS 2.332.4.

Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: over 1 year ago
Updated: 10 months ago

CVSS Score: 5.3
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Identifiers: GHSA-9grj-j43m-mjqr, CVE-2022-34174

Affected Packages

Versions: < 2.332.4, >= 2.334, < 2.356
Fixed in: 2.332.4, 2.356