[org.jenkins-ci.main:jenkins-core] Cross-site Scripting vulnerability in Jenkins

Since Jenkins 2.321 and LTS 2.332.1, the HTML output generated for new symbol-based SVG icons includes the title attribute of l:ionicon until Jenkins 2.334 and alt attribute of l:icon since Jenkins 2.335 without further escaping.

This vulnerability is known to be exploitable by attackers with Job/Configure permission.

Jenkins 2.356, LTS 2.332.4 and LTS 2.346.1 addresses this vulnerability, the title attribute of l:ionicon (Jenkins LTS 2.332.4) and alt attribute of l:icon (Jenkins 2.356 and LTS 2.346.1) are escaped in the generated HTML output.

References

• https://nvd.nist.gov/vuln/detail/CVE-2022-34171
• https://www.jenkins.io/security/advisory/2022-06-22/#SECURITY-2781
• https://github.com/advisories/GHSA-7f84-p6r5-jr6q