GitHub Advisoryadvisory · Maven

GHSA-4jjj-cm7q-v6hr Jenkins Diagnostic page exposed session cookies

MEDIUM Published 2022-05-24 Modified 2022-12-20 Official page ↗
Aliases
CVE-2020-2103
Ecosystem
Maven
Packages
org.jenkins-ci.main:jenkins-core
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weaknesses
CWE-200
Reviewed
2022-12-20

Affected packages

• Maven org.jenkins-ci.main:jenkins-core: >= 2.205, < 2.219 → fixed in 2.219 • Maven org.jenkins-ci.main:jenkins-core: < 2.204.2 → fixed in 2.204.2

Description

Jenkins shows various technical details about the current user on the `/whoAmI` page. In a previous fix, the `Cookie` header value containing the HTTP session ID was redacted. However, user metadata shown on this page could also include the HTTP session ID in Jenkins 2.218 and earlier, LTS 2.204.1 and earlier. This allows attackers able to exploit a cross-site scripting vulnerability to obtain the HTTP session ID value from this page. Jenkins 2.219, LTS 2.204.2 no longer prints out the affected user metadata that might contain the HTTP session ID. Additionally, we also redact values of further authentication-related HTTP headers in addition to `Cookie` on this page as a hardening.

Related

Alias · CVE (1)

  • CVE-2020-2103 Jenkins 2.218 and earlier, LTS 2.204.1 and earlier exposed session identifiers on a user's detail object in the whoAmI diagnostic page. vulnerability

Weakness · CWE (1)

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness

References