ghsa-c735-g9f2-2mvp
Vulnerability from github
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": [ { "database_specific": { "last_known_affected_version_range": "\u003c= 2.204.5" }, "package": { "ecosystem": "Maven", "name": "org.jenkins-ci.main:jenkins-core" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "2.204.6" } ], "type": "ECOSYSTEM" } ] }, { "database_specific": { "last_known_affected_version_range": "\u003c= 2.227" }, "package": { "ecosystem": "Maven", "name": "org.jenkins-ci.main:jenkins-core" }, "ranges": [ { "events": [ { "introduced": "2.205" }, { "fixed": "2.228" } ], "type": "ECOSYSTEM" } ] } ], "aliases": [ "CVE-2020-2160" ], "database_specific": { "cwe_ids": [ "CWE-352", "CWE-435" ], "github_reviewed": true, "github_reviewed_at": "2022-06-24T00:58:56Z", "nvd_published_at": "2020-03-25T17:15:00Z", "severity": "HIGH" }, "details": "An extension point in Jenkins allows selectively disabling cross-site request forgery (CSRF) protection for specific URLs.\n\nImplementations 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.\n\nJenkins 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.\n\nIn case of problems, administrators can disable this security fix by setting the system property `hudson.security.csrf.CrumbFilter.UNPROCESSED_PATHINFO` to `true`.\n\nAs 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`.", "id": "GHSA-c735-g9f2-2mvp", "modified": "2024-03-12T16:01:44Z", "published": "2022-05-24T17:12:40Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-2160" }, { "type": "WEB", "url": "https://github.com/jenkinsci/jenkins/commit/f479652171f4ab854747de64b22bf59adb35fb8f" }, { "type": "WEB", "url": "https://github.com/jenkinsci/jenkins/commit/f7cf28355973df1ca6eb19066370bf70b10742f7" }, { "type": "PACKAGE", "url": "https://github.com/jenkinsci/jenkins" }, { "type": "WEB", "url": "https://jenkins.io/security/advisory/2020-03-25/#SECURITY-1774" }, { "type": "WEB", "url": "http://www.openwall.com/lists/oss-security/2020/03/25/2" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "type": "CVSS_V3" } ], "summary": "Cross-Site Request Forgery in Jenkins" }
Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.