CVE-2020-2102
First published: Wed Jan 29 2020(Updated: )
Jenkins 2.218 and earlier, LTS 2.204.1 and earlier does not use a constant-time comparison when checking whether two HMACs are equal. This could potentially allow attackers to use statistical methods to obtain a valid HMAC for an attacker-controlled input value. Jenkins 2.219, LTS 2.204.2 now uses a constant-time comparison when validating HMACs.
Credit: jenkinsci-cert@googlegroups.com jenkinsci-cert@googlegroups.com jenkinsci-cert@googlegroups.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| maven/org.jenkins-ci.main:jenkins-core | >=2.205<=2.218 | 2.219 |
| maven/org.jenkins-ci.main:jenkins-core | <=2.204.1 | 2.204.2 |
| Jenkins Jenkins | <=2.204.1 | |
| Jenkins Jenkins | <=2.218 |
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Reference Links
- http://www.openwall.com/lists/oss-security/2020/01/29/1
- 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-1660
- https://nvd.nist.gov/vuln/detail/CVE-2020-2102
- https://github.com/jenkinsci/jenkins/commit/6f35dbb939ebe947bdb1979010b208480f1d0e31
- https://github.com/advisories/GHSA-fj6f-6933-839j (Advisory)
- collector/nvd-index
- collector/nvd-api
- collector/github-advisory-latest
- alias/GHSA-fj6f-6933-839j
- alias/CVE-2020-2102
- collector/nvd-cve
- collector/github-advisory
- agent/weakness
- agent/references
- agent/severity
- agent/author
- agent/description
- agent/type
- agent/event
- agent/first-publish-date
- agent/tags
- agent/softwarecombine
- agent/last-modified-date
- collector/mitre-cve
- source/MITRE
- vendor/jenkins
- canonical/jenkins jenkins
- version/jenkins jenkins/2.204.1
- version/jenkins jenkins/2.218
- package-manager/maven