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6.3 Medium

CVE-2022-41716 Due to unsanitized NUL values, attackers may be able to maliciously set environment variables on Windows

Description

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".

Affected products and versions

Product Affected versions Fixed in
syscall 1.19 1.19.0-0 → < 1.19.3 1.19.3
syscall 1.18 earliest → < 1.18.8 1.18.8
os/exec 1.19 1.19.0-0 → < 1.19.3 1.19.3
os/exec 1.18 earliest → < 1.18.8 1.18.8

References

Timeline

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