CVE-2020-2102 – org.jenkins-ci.main:jenkins-core

Package

Manager: maven
Name: org.jenkins-ci.main:jenkins-core
Vulnerable Version: >=0 <2.204.2 || >=2.205 <2.219

Severity

Level: Medium

CVSS v3.1: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS: 0.02195 pctl0.83772

Details

Non-constant time HMAC comparison Jenkins 2.218 and earlier, LTS 2.204.1 and earlier does not use a constant-time comparison when checking whether two HMACs are equal. This could potentially allow attackers to use statistical methods to obtain a valid HMAC for an attacker-controlled input value. Jenkins 2.219, LTS 2.204.2 now uses a constant-time comparison when validating HMACs.

Metadata

Created: 2022-05-24T17:07:40Z
Modified: 2022-12-19T21:06:59Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-fj6f-6933-839j/GHSA-fj6f-6933-839j.json
CWE IDs: ["CWE-203", "CWE-208"]
Alternative ID: GHSA-fj6f-6933-839j
Finding: F026
Auto approve: 1