git-diff before 2.0.7 OS Command Injection via gitDiff Input Strings

git-diff before 2.0.7 contains an OS command injection vulnerability that allows attackers to execute shell commands by supplying crafted strings to the gitDiff API. Attackers who control a diffed document string can embed $(cmd) or backtick substitutions that shelljs.exec evaluates, running commands with Node.js process privileges.

In "index.js" file line 240, the run command executes the git command with a user controlled variable called remoteUrl. This affects git-diff-apply all versions prior to 0.22.2.