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GO-2024-2962

Output of "go env" does not sanitize values in cmd/go

Quick fix

GO-2024-2962 — toolchain: upgrade to the fixed version with the command below.

go get toolchain@v1.21.0-0

Details

Command go env is documented as outputting a shell script containing the Go environment. However, go env doesn't sanitize values, so executing its output as a shell script can cause various bad bahaviors, including executing arbitrary commands or inserting new environment variables.

This issue is relatively minor because, in general, if an attacker can set arbitrary environment variables on a system, they have better attack vectors than making "go env" print them out.

Are you affected?

Enter the version of the package you're using.

Affected packages

Go/toolchain
Introduced in: 0Fixed in: 1.21.0-0
Fixgo get toolchain@v1.21.0-0

References