CVE-2020-2305: XEE
First published: Wed Nov 04 2020(Updated: )
A flaw was found in the mercurial plugin in Jenkins. The XML changelog parser is not configured to prevent an XML external entity (XXE) attack allowing an attacker the ability to control an agent process to have Jenkins parse a crafted changelog file that uses external entities for extraction of secrets from the Jenkins controller or server-side request forgery. The highest threat from this vulnerability is to data confidentiality.
Credit: jenkinsci-cert@googlegroups.com jenkinsci-cert@googlegroups.com jenkinsci-cert@googlegroups.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/jenkins | <2-plugins-0:3.11.1612862361-1.el7 | 2-plugins-0:3.11.1612862361-1.el7 |
| redhat/jenkins | <2-plugins-0:4.4.1611203637-1.el7 | 2-plugins-0:4.4.1611203637-1.el7 |
| redhat/jenkins | <2-plugins-0:4.5.1610108899-1.el7 | 2-plugins-0:4.5.1610108899-1.el7 |
| redhat/jenkins | <2-plugins-0:4.6.1609853716-1.el8 | 2-plugins-0:4.6.1609853716-1.el8 |
| Jenkins Mercurial | <=2.11 | |
| maven/org.jenkins-ci.plugins:mercurial | <2.8.1 | 2.8.1 |
| maven/org.jenkins-ci.plugins:mercurial | =2.9 | 2.9.1 |
| maven/org.jenkins-ci.plugins:mercurial | =2.10 | 2.10.1 |
| maven/org.jenkins-ci.plugins:mercurial | =2.11 | 2.12 |
Remedy
Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update as soon as possible.
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2020-2305
- https://www.jenkins.io/security/advisory/2020-11-04/#SECURITY-2115
- https://github.com/CVEProject/cvelist/blob/381fe967666a5ce01625a7a050427aa4757e3ca6/2020/2xxx/CVE-2020-2305.json
- https://github.com/jenkinsci/mercurial-plugin/commit/84af58b08f80bb92792f7bc04a31487f3eeee95a
- https://github.com/advisories/GHSA-x58r-wxc3-7pqr (Advisory)
- https://access.redhat.com/errata/RHSA-2021:0038
- https://access.redhat.com/security/cve/cve-2020-2305
- https://access.redhat.com/errata/RHSA-2021:0034
- https://access.redhat.com/errata/RHSA-2021:0282
- https://access.redhat.com/errata/RHSA-2021:0637
- https://bugzilla.redhat.com/show_bug.cgi?id=1895940
- https://www.cve.org/CVERecord?id=CVE-2020-2305 https://nvd.nist.gov/vuln/detail/CVE-2020-2305 https://www.jenkins.io/security/advisory/2020-11-04/#SECURITY-2115
Parent vulnerabilities
(Appears in the following advisories)
- collector/redhat-cve
- collector/nvd-index
- collector/nvd-api
- collector/nvd-cve
- collector/github-advisory-latest
- alias/GHSA-x58r-wxc3-7pqr
- alias/CVE-2020-2305
- collector/github-advisory
- agent/type
- agent/first-publish-date
- agent/last-modified-date
- agent/softwarecombine
- agent/references
- agent/remedy
- agent/severity
- agent/weakness
- agent/author
- agent/description
- collector/redhat-bugzilla
- source/Red Hat
- agent/software-canonical-lookup
- agent/tags
- agent/event
- collector/mitre-cve
- source/MITRE
- package-manager/redhat
- vendor/jenkins
- canonical/jenkins mercurial
- version/jenkins mercurial/2.11
- package-manager/maven