PT-2020-15310 · Jenkins · Jenkins

Daniel Beck + 1 · Published 2020-01-29 · Updated 2024-03-06 · CVE-2020-2103

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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 allows attackers to obtain the HTTP session ID value from the /whoAmI page, potentially exploiting a cross-site scripting vulnerability. This page shows various technical details about the current user, including user metadata that could contain the HTTP session ID in affected versions. The Cookie header value containing the HTTP session ID was previously redacted, but user metadata could still include this ID.

Recommendations For Jenkins versions 2.218 and earlier, update to version 2.219 or later to resolve the issue. For Jenkins LTS versions 2.204.1 and earlier, update to version 2.204.2 or later to resolve the issue. As a temporary workaround, consider restricting access to the /whoAmI page until a patch is available.

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

BIT-JENKINS-2020-2103

CVE-2020-2103

GHSA-4JJJ-CM7Q-V6HR

Affected Products

Jenkins

References · 13

• https://jenkins.io/security/advisory/2020-01-29/#SECURITY-1695 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2020:0681 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2020:0683 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-2103 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-4jjj-cm7q-v6hr · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-2103 · Security Note
• https://access.redhat.com/errata/RHBA-2020:0675 · Vendor Advisory
• https://access.redhat.com/errata/RHBA-2020:0402 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-jenkins-2020-2103 · Vendor Advisory
• https://github.com/jenkinsci/jenkins · Note
• https://github.com/jenkinsci/jenkins/commit/77f36f37f5e3cabd0e4ece16d46d7943454ed15b · Note
• http://openwall.com/lists/oss-security/2020/01/29/1 · Note
• https://t.me/cvenotify/598 · Telegram Post