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

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katiehockman opened this issue Nov 12, 2020 · 1 comment
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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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FrozenDueToAge Security
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Go1.16

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@katiehockman
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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.
@katiehockman katiehockman added this to the Go1.16 milestone Nov 12, 2020
@katiehockman katiehockman changed the title cmd/go: improper validation of cgo flags can lead to remote code execution at build time [Go 1.14] cmd/go: improper validation of cgo flags can lead to remote code execution at build time Nov 12, 2020
This was referenced Nov 12, 2020
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@katiehockman
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katiehockman commented Nov 12, 2020 •
edited by FiloSottile
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Fixed by 062e0e5

Fixed by da7aa86 (https://golang.org/cl/267277)

@ianlancetaylor ianlancetaylor mentioned this issue Nov 12, 2020
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This was referenced Nov 12, 2020
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