GHSA-34wx-x2w9-vqm3
DoS vulnerability in bundled XStream library in Jenkins Core
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Maven | org.jenkins-ci.main:jenkins-core | >= 2.320, < 2.334 | 2.334 |
| Maven | org.jenkins-ci.main:jenkins-core | < 2.319.3 | 2.319.3 |
Details
As written in the advisory (Markdown source, shown as plain text).
Jenkins 2.333 and earlier, LTS 2.319.2 and earlier is affected by the XStream library’s vulnerability [CVE-2021-43859](https://x-stream.github.io/CVE-2021-43859.html). This library is used by Jenkins to serialize and deserialize various XML files, like global and job `config.xml`, `build.xml`, and numerous others.
This allows attackers able to submit crafted XML files to Jenkins to be parsed as configuration, e.g. through the `POST config.xml` API, to cause a denial of service (DoS).
References
External links from the advisory. They lead to third-party sites.