ghsa-cv2w-q8c3-xjv7
Vulnerability from github
Agents are allowed some limited access to files on the Jenkins controller file system. The directories agents are allowed to access in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier include the directories storing build-related information, intended to allow agents to store build-related metadata during build execution. As a consequence, this allows any agent to read and write the contents of any build directory stored in Jenkins with very few restrictions (build.xml
and some Pipeline-related metadata).
Jenkins 2.319, LTS 2.303.3 prevents agents from accessing contents of build directories unless it’s for builds currently running on the agent attempting to access the directory.
Update Pipeline: Nodes and Processes to version 2.40 or newer for Jenkins to associate Pipeline node
blocks with the agent they’re running on for this fix.
If you are unable to immediately upgrade to Jenkins 2.319, LTS 2.303.3, you can install the Remoting Security Workaround Plugin. It will prevent all agent-to-controller file access using FilePath
APIs. Because it is more restrictive than Jenkins 2.319, LTS 2.303.3, more plugins are incompatible with it. Make sure to read the plugin documentation before installing it.
{ "affected": [ { "database_specific": { "last_known_affected_version_range": "\u003c= 2.303.2" }, "package": { "ecosystem": "Maven", "name": "org.jenkins-ci.main:jenkins-core" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "2.303.3" } ], "type": "ECOSYSTEM" } ] }, { "database_specific": { "last_known_affected_version_range": "\u003c= 2.318" }, "package": { "ecosystem": "Maven", "name": "org.jenkins-ci.main:jenkins-core" }, "ranges": [ { "events": [ { "introduced": "2.304" }, { "fixed": "2.319" } ], "type": "ECOSYSTEM" } ] } ], "aliases": [ "CVE-2021-21697" ], "database_specific": { "cwe_ids": [ "CWE-184" ], "github_reviewed": true, "github_reviewed_at": "2022-06-23T06:46:48Z", "nvd_published_at": "2021-11-04T17:15:00Z", "severity": "CRITICAL" }, "details": "Agents are allowed some limited access to files on the Jenkins controller file system. The directories agents are allowed to access in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier include the directories storing build-related information, intended to allow agents to store build-related metadata during build execution. As a consequence, this allows any agent to read and write the contents of any build directory stored in Jenkins with very few restrictions (`build.xml` and some Pipeline-related metadata).\n\nJenkins 2.319, LTS 2.303.3 prevents agents from accessing contents of build directories unless it\u2019s for builds currently running on the agent attempting to access the directory.\n\nUpdate [Pipeline: Nodes and Processes](https://plugins.jenkins.io/workflow-durable-task-step/) to version 2.40 or newer for Jenkins to associate Pipeline `node` blocks with the agent they\u2019re running on for this fix.\n\nIf you are unable to immediately upgrade to Jenkins 2.319, LTS 2.303.3, you can install the [Remoting Security Workaround Plugin](https://www.jenkins.io/redirect/remoting-security-workaround/). It will prevent all agent-to-controller file access using `FilePath` APIs. Because it is more restrictive than Jenkins 2.319, LTS 2.303.3, more plugins are incompatible with it. Make sure to read the plugin documentation before installing it.", "id": "GHSA-cv2w-q8c3-xjv7", "modified": "2023-12-18T11:30:58Z", "published": "2022-05-24T19:19:43Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21697" }, { "type": "WEB", "url": "https://github.com/jenkinsci/jenkins/commit/cf388d2a04e6016d23eb93fa3cc804f2554b98f0" }, { "type": "WEB", "url": "https://github.com/jenkinsci/jenkins/commit/eae33841b587da787f37d5b6c8451d483edc04d9" }, { "type": "PACKAGE", "url": "https://github.com/jenkinsci/jenkins" }, { "type": "WEB", "url": "https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2428" }, { "type": "WEB", "url": "http://www.openwall.com/lists/oss-security/2021/11/04/3" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "type": "CVSS_V3" } ], "summary": "Agent-to-controller access control allows reading/writing most content of build directories 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.