CVE-2020-2102

lowpriority · track · 21EPSS 0.014 · 72 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.40% (72nd) EPSS

CVSS 3.5 · low

Is it mine?

69 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

Jenkins 2.218 and earlier, LTS 2.204.1 and earlier used a non-constant time comparison function when validating an HMAC.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedjenkins-0:2.204.2.1583446818-1.el7.noarch as a component of Red Hat OpenShift Container Platform 4.3redhat_csaf
Before applying this update, ensure all previously released errata relevant to your system have been applied. For OpenShift Container Platform 4.3 see the following documentation, which will be updated shortly for release 4.3.5, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update: https://docs.openshift.com/container-platform/4.3/release_notes/ocp-4-3-release-notes.html Details on how to access this content are available at https://docs.openshift.com/container-platform/4.3/updating/updating-cluster-cli.html.
https://access.redhat.com/errata/RHBA-2020:0675
Fixedjenkins-0:2.204.2.1583446818-1.el7.src as a component of Red Hat OpenShift Container Platform 4.3redhat_csaf
Before applying this update, ensure all previously released errata relevant to your system have been applied. For OpenShift Container Platform 4.3 see the following documentation, which will be updated shortly for release 4.3.5, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update: https://docs.openshift.com/container-platform/4.3/release_notes/ocp-4-3-release-notes.html Details on how to access this content are available at https://docs.openshift.com/container-platform/4.3/updating/updating-cluster-cli.html.
https://access.redhat.com/errata/RHBA-2020:0675

cvss

Technical severity, 0–10. One row per scoring source.

5.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.5–5.3

v2.03.5lowAV:N/AC:M/Au:S/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 6.8 · impact 2.9

v3.15.3mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 1.6 · impact 3.6

v3.05.3mediumCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · OSV

v3.14.9mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.15.3mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · Red Hat Product Security US

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-203USprimaryCWE-203USCWE-208USCWE-385US

affected products (69)

Products and version ranges known to be affected.

Jenkins Project Jenkins≤ unspecified ≤2.218enisa_euvdEU
Jenkins Project Jenkins≤ unspecified ≤LTS 2.204.1enisa_euvdEU
jenkins jenkins≤ 2.204.1nvdUScpe:2.3:a:jenkins:jenkins:*:*:*:*:*:*:*:*
jenkins jenkins≤ 2.218nvdUScpe:2.3:a:jenkins:jenkins:*:*:*:*:*:*:*:*
Bitnami jenkins< 2.218.1osvUSpkg:bitnami/jenkins
Maven org.jenkins-ci.main:jenkins-core< 2.204.2osvUSpkg:maven/org.jenkins-ci.main/jenkins-core
Maven org.jenkins-ci.main:jenkins-core2.205 → 2.219osvUSpkg:maven/org.jenkins-ci.main/jenkins-core
atomic-enterprise-service-catalog-1:4.3.5-202003020117.git.0.4eb885c.el7.src as a component of Red Hat OpenShift Container Platform 4.3all versionsnot affectedredhat_csafUS
atomic-enterprise-service-catalog-1:4.3.5-202003020117.git.0.4eb885c.el7.x86_64 as a component of Red Hat OpenShift Container Platform 4.3all versionsnot affectedredhat_csafUS
atomic-enterprise-service-catalog-svcat-1:4.3.5-202003020117.git.0.4eb885c.el7.x86_64 as a component of Red Hat OpenShift Container Platform 4.3all versionsnot affectedredhat_csafUS
atomic-openshift-service-idler-0:4.3.5-202003020117.git.13.3ac2b0e.el7.src as a component of Red Hat OpenShift Container Platform 4.3all versionsnot affectedredhat_csafUS
atomic-openshift-service-idler-0:4.3.5-202003020117.git.13.3ac2b0e.el7.x86_64 as a component of Red Hat OpenShift Container Platform 4.3all versionsnot affectedredhat_csafUS
buildah-0:1.11.6-4.el8.src as a component of Red Hat OpenShift Container Platform 4.3all versionsnot affectedredhat_csafUS
buildah-0:1.11.6-4.el8.x86_64 as a component of Red Hat OpenShift Container Platform 4.3all versionsnot affectedredhat_csafUS
buildah-debuginfo-0:1.11.6-4.el8.x86_64 as a component of Red Hat OpenShift Container Platform 4.3all versionsnot affectedredhat_csafUS
buildah-debugsource-0:1.11.6-4.el8.x86_64 as a component of Red Hat OpenShift Container Platform 4.3all versionsnot affectedredhat_csafUS
buildah-tests-0:1.11.6-4.el8.x86_64 as a component of Red Hat OpenShift Container Platform 4.3all versionsnot affectedredhat_csafUS
buildah-tests-debuginfo-0:1.11.6-4.el8.x86_64 as a component of Red Hat OpenShift Container Platform 4.3all versionsnot affectedredhat_csafUS
containers-common-1:0.1.40-4.rhaos.el8.x86_64 as a component of Red Hat OpenShift Container Platform 4.3all versionsnot affectedredhat_csafUS
cri-o-0:1.16.3-22.dev.rhaos4.3.git11c04e3.el8.src as a component of Red Hat OpenShift Container Platform 4.3all versionsnot affectedredhat_csafUS

showing 20 of 69

advisories (3)

Vendor and ecosystem advisories describing this.

RHBA-2020:0675Red Hat Bug Fix Advisory: OpenShift Container Platform 4.3.5 packages update2020-03-10csaf · redhat_csafUS
Red Hat OpenShift Container Platform release 4.3.5 is now available with updates to packages and images that fix several bugs.
GHSA-fj6f-6933-839jNon-constant time HMAC comparison2022-05-24ghsa · osvUS
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.
BIT-jenkins-2020-21022024-03-06vendor · osvUS
Jenkins 2.218 and earlier, LTS 2.204.1 and earlier used a non-constant time comparison function when validating an HMAC.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv nvd redhat_csaf NVD CVE.org MITRE

published 2020-01-29modified 2026-06-17

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+881 more

references (23)

External citations — patches, advisories, analysis.

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