CVE-2020-2101

lowpriority · track · 21EPSS 0.014 · 72 %ileEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.37% (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 did not use a constant-time comparison function for validating connection secrets, which could potentially allow an attacker to use a timing attack to obtain this secret.

01

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
02

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
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-203USprimaryCWE-203USCWE-208USCWE-385US
04

affected products (69)

Products and version ranges known to be affected.

showing 20 of 69
05

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-w7jr-wqw6-54xcNon-constant time comparison of inbound TCP agent connection secret2022-05-24ghsa · osvUS

    Jenkins 2.218 and earlier, LTS 2.204.1 and earlier does not use a constant-time comparison validating the connection secret when an inbound TCP agent connection is initiated. This could potentially allow attackers to use statistical methods to obtain the connection secret. Jenkins 2.219, LTS 2.204.2 now uses a constant-time comparison function for verifying connection secrets.

  • BIT-jenkins-2020-21012024-03-06vendor · osvUS

    Jenkins 2.218 and earlier, LTS 2.204.1 and earlier did not use a constant-time comparison function for validating connection secrets, which could potentially allow an attacker to use a timing attack to obtain this secret.

06

also known as (5)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdosvnvdredhat_csafNVDCVE.orgMITRE
published 2020-01-29modified 2026-06-17
09

references (23)

External citations — patches, advisories, analysis.

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