Description
Jenkins Git Client Plugin 2.8.4 and earlier and 3.0.0-rc did not properly restrict values passed as URL argument to an invocation of 'git ls-remote', resulting in OS command injection.
Remediation
References
http://www.openwall.com/lists/oss-security/2019/09/12/2
https://jenkins.io/security/advisory/2019-09-12/#SECURITY-1534