XML External Entity injection in Cobertura - CVE-2020-2138

Vulnerability details

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to insufficient validation of user-supplied XML input. A remote user able to control the input files for the "Publish Cobertura Coverage Report" post-build step can pass a specially crafted XML code to the affected application and view contents of arbitrary files on the system or initiate requests to external systems.

Successful exploitation of the vulnerability may allow an attacker to view contents of arbitrary file on the server or perform network scanning of internal and external infrastructure.

Affected software

How to mitigate CVE-2020-2138

External References

• http://www.openwall.com/lists/oss-security/2020/03/09/1
• https://jenkins.io/security/advisory/2020-03-09/#SECURITY-1700

Related Security Bulletins

• Multiple vulnerabilities in Jenkins Cobertura Plugin