GO-2022-1095

Dashboard / Vulnerabilities / GO-2022-1095

GO-2022-1095

Summary: Unsanitized NUL in environment variables on Windows in syscall and os/exec

Details: Due to unsanitized NUL values, attackers may be able to maliciously set environment variables on Windows. In syscall.StartProcess and os/exec.Cmd, invalid environment variable values containing NUL values are not properly checked for. A malicious environment variable value can exploit this behavior to set a value for a different environment variable. For example, the environment variable string "A=B\x00C=D" sets the variables "A=B" and "C=D".

References: https://go.dev/issue/56284, https://go.dev/cl/446916, https://groups.google.com/g/golang-announce/c/mbHY1UY3BaM/m/hSpmRzk-AgAJ