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cmd/go: improper validation of cgo flags can lead to remote code execution at build time #42556

katiehockman opened this issue Nov 12, 2020 · 1 comment


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@katiehockman katiehockman commented Nov 12, 2020

The go command may execute arbitrary code at build time when cgo is in use. This may occur when running go get on a malicious package, or any other command that builds untrusted code.

This can be caused by a malicious gcc flags specified via a #cgo directive.

Thanks to Imre Rad for reporting this issue.

This issue is CVE-2020-28367.

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