CVE-2020-2102

MEDIUM

Jenkins < 2.204.1 and < 2.218 - Timing Attack via HMAC Validation

Title source: llm
STIX 2.1

Description

Jenkins 2.218 and earlier, LTS 2.204.1 and earlier used a non-constant time comparison function when validating an HMAC.

References (6)

Core 6
Core References
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2020/01/29/1
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2020:0681
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2020:0683
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHBA-2020:0402
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHBA-2020:0675

Scores

CVSS v3 5.3
EPSS 0.0152
EPSS Percentile 81.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-203
Status published
Products (3)
jenkins/jenkins < 2.204.1
jenkins/jenkins < 2.218
org.jenkins-ci.main/jenkins-core 0 - 2.204.2Maven
Published Jan 29, 2020
Tracked Since Feb 18, 2026