Barracuda Email Security Gateway: CVE-2023-2868: Improper Input Validation

A remote command injection vulnerability exists in the Barracuda Email Security Gateway, product effecting versions 5.1.3.001-9.2.0.006. The vulnerability arises out of a failure to comprehensively sanitize the processing of .tar file (tape archives).The vulnerability stems from incomplete input validation of a user-supplied .tar file as it pertains to the names of the files contained within the archive. As a consequence, a remote attacker can specifically format these file names in a particular manner that will result in remotely executing a system command through Perl's qx operator with the privileges of the Email Security Gateway product.This issue was fixed as part of BNSF-36456 patch. This patch was automatically applied to all customer appliances.