PT-2020-15308 · Cloudbees+1 · Jenkins

Daniel Beck + 1 · Published 2020-01-29 · Updated 2024-03-06 · CVE-2020-2101

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions Jenkins versions 2.218 and earlier Jenkins LTS versions 2.204.1 and earlier

Description The issue is related to the validation of connection secrets. Specifically, a non-constant-time comparison function was used, which could potentially allow an attacker to use a timing attack or statistical methods to obtain the connection secret. This could be exploited when an inbound TCP agent connection is initiated.

Recommendations For Jenkins versions 2.218 and earlier, update to version 2.219 or later. For Jenkins LTS versions 2.204.1 and earlier, update to version 2.204.2 or later.

Fix

Side Channel Attack

Weakness Enumeration

CWE-208

CWE-203

Related Identifiers

BIT-JENKINS-2020-2101

CVE-2020-2101

GHSA-W7JR-WQW6-54XC

Affected Products

Jenkins

References · 13

• https://jenkins.io/security/advisory/2020-01-29/#SECURITY-1659 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2020:0683 · Vendor Advisory
• https://access.redhat.com/errata/RHBA-2020:0675 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-2101 · Security Note
• https://access.redhat.com/errata/RHSA-2020:0681 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-w7jr-wqw6-54xc · Vendor Advisory
• https://access.redhat.com/errata/RHBA-2020:0402 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-2101 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-jenkins-2020-2101 · Vendor Advisory
• https://github.com/jenkinsci/jenkins · Note
• https://github.com/jenkinsci/jenkins/commit/0ba36508187ff771bba87feaf03057496775064c · Note
• http://openwall.com/lists/oss-security/2020/01/29/1 · Note
• https://t.me/cvenotify/596 · Telegram Post