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Security Advisories: GSA_kwCzR0hTQS00ampqLWNtN3EtdjZocs4AAjcO
Jenkins Diagnostic page exposed session cookies
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.
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS00ampqLWNtN3EtdjZocs4AAjcO
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: about 1 year ago
Updated: 4 months ago
CVSS Score: 5.4
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Identifiers: GHSA-4jjj-cm7q-v6hr, CVE-2020-2103
References:
- https://nvd.nist.gov/vuln/detail/CVE-2020-2103
- https://access.redhat.com/errata/RHBA-2020:0402
- https://access.redhat.com/errata/RHBA-2020:0675
- https://access.redhat.com/errata/RHSA-2020:0681
- https://access.redhat.com/errata/RHSA-2020:0683
- https://jenkins.io/security/advisory/2020-01-29/#SECURITY-1695
- http://www.openwall.com/lists/oss-security/2020/01/29/1
- https://github.com/advisories/GHSA-4jjj-cm7q-v6hr
Affected Packages
maven:org.jenkins-ci.main:jenkins-core
Versions: < 2.204.2, >= 2.205, < 2.219Fixed in: 2.204.2, 2.219