Klocwork Analysis Plugin 2020.2.1 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.

This allows a user able to control the input files for the Klocwork plugin parser to have Jenkins parse a crafted file that uses external entities for extraction of secrets from the Jenkins controller or server-side request forgery.

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-2247
• https://jenkins.io/security/advisory/2020-09-01/#SECURITY-1831
• http://www.openwall.com/lists/oss-security/2020/09/01/3