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CVE-2020-2160

UNKNOWN
Published 2020-03-25T16:05:34
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No CVSS data available

Description

Jenkins 2.227 and earlier, LTS 2.204.5 and earlier uses different representations of request URL paths, which allows attackers to craft URLs that allow bypassing CSRF protection of any target URL.

Understanding This Vulnerability

This Common Vulnerabilities and Exposures (CVE) entry provides detailed information about a security vulnerability that has been publicly disclosed. CVEs are standardized identifiers assigned by MITRE Corporation to track and catalog security vulnerabilities across software and hardware products.

The severity rating (UNKNOWN) indicates the potential impact of this vulnerability based on the CVSS (Common Vulnerability Scoring System) framework. Higher severity ratings typically indicate vulnerabilities that could lead to more significant security breaches if exploited. Security teams should prioritize remediation efforts based on severity, exploit availability, and the EPSS (Exploit Prediction Scoring System) score, which predicts the likelihood of exploitation in the wild.

If this vulnerability affects products or systems in your infrastructure, we recommend reviewing the affected products section, checking for available patches or updates from vendors, and implementing recommended workarounds or solutions until a permanent fix is available. Organizations should also monitor security advisories and threat intelligence feeds for updates about active exploitation of this vulnerability.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

References

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed HIGH

Cross-Site Request Forgery in Jenkins

GHSA-c735-g9f2-2mvp

Advisory Details

An extension point in Jenkins allows selectively disabling cross-site request forgery (CSRF) protection for specific URLs. Implementations of that extension point received a different representation of the URL path than the Stapler web framework uses to dispatch requests in Jenkins 2.227 and earlier, LTS 2.204.5 and earlier. This discrepancy allowed attackers to craft URLs that would bypass the CSRF protection of any target URL. Jenkins now uses the same representation of the URL path to decide whether CSRF protection is needed for a given URL as the Stapler web framework uses. In case of problems, administrators can disable this security fix by setting the system property `hudson.security.csrf.CrumbFilter.UNPROCESSED_PATHINFO` to `true`. As an additional safeguard, semicolon (`;`) characters in the path part of a URL are now banned by default. Administrators can disable this protection by setting the system property `jenkins.security.SuspiciousRequestFilter.allowSemicolonsInPath` to `true`.

Affected Packages

Maven org.jenkins-ci.main:jenkins-core
ECOSYSTEM: ≥0 <2.204.6
Maven org.jenkins-ci.main:jenkins-core
ECOSYSTEM: ≥2.205 <2.228

CVSS Scoring

CVSS Score

7.5

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Advisory provided by GitHub Security Advisory Database. Published: May 24, 2022, Modified: March 12, 2024

References

Published: 2020-03-25T16:05:34
Last Modified: 2024-08-04T07:01:40.917Z
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