CVE-2020-2103 – org.jenkins-ci.main:jenkins-core

Package

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

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

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

EPSS: 0.42955 pctl0.97403

Details

Jenkins Diagnostic page exposed session cookies Jenkins shows various technical details about the current user on the `/whoAmI` page. In [a previous fix](https://www.jenkins.io/security/advisory/2019-09-25/#SECURITY-1505), 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.

Metadata

Created: 2022-05-24T17:07:40Z
Modified: 2022-12-20T14:34:50Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-4jjj-cm7q-v6hr/GHSA-4jjj-cm7q-v6hr.json
CWE IDs: ["CWE-200"]
Alternative ID: GHSA-4jjj-cm7q-v6hr
Finding: F308
Auto approve: 1