![]() Disabling `git shell` access via remote logins is a viable short-term workaround. Note that a victim must first allow access to `git shell` as a login shell in order to be vulnerable to this attack. ![]() ![]() Because the resulting array is then passed to `execv()`, it is possible to leverage this attack to gain remote code execution on a victim machine. In versions prior to 2.30.6, 2.31.5, 2.32.4, 2.33.5, 2.34.5, 2.35.5, 2.36.3, and 2.37.4, the function that splits the command arguments into an array improperly uses an `int` to represent the number of entries in the array, allowing a malicious actor to intentionally overflow the return value, leading to arbitrary heap writes. `git shell` is a restricted login shell that can be used to implement Git's push/pull functionality via SSH. Git is an open source, scalable, distributed revision control system.
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