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Message-ID: <829a1cae-f61d-4cb8-b57d-1560e3861100@oracle.com>
Date: Tue, 8 Jul 2025 14:33:12 -0700
From: Alan Coopersmith <alan.coopersmith@...cle.com>
To: oss-security@...ts.openwall.com
Subject: Go 1.24.5 & 1.23.11 fix CVE-2025-4674
https://groups.google.com/g/golang-announce/c/gTNJnDXmn34 announces:
> Hello gophers,
>
> We have just released Go versions 1.24.5 and 1.23.11, minor point releases.
>
> These minor releases include 1 security fixes following the security policy:
>
> cmd/go: unexpected command execution in untrusted VCS repositories
>
> Various uses of the Go toolchain in untrusted VCS repositories can result in
> unexpected code execution. When using the Go toolchain in directories fetched
> using various VCS tools (such as directly cloning Git or Mercurial repositories)
> can cause the toolchain to execute unexpected commands, if said directory
> contains multiple VCS configuration metadata (such as a '.hg' directory in a Git
> repository). This is due to how the Go toolchain attempts to resolve which VCS
> is being used in order to embed build information in binaries and determine
> module versions.
>
> The toolchain will now abort attempting to resolve which VCS is being used if it
> detects multiple VCS configuration metadata in a module directory or nested VCS
> configuration metadata (such as a '.git' directoy in a parent directory and a
> '.hg' directory in a child directory). This will not prevent the toolchain from
> building modules, but will result in binaries omitting VCS related build
> information.
>
> If this behavior is expected by the user, the old behavior can be re-enabled by
> setting GODEBUG=allowmultiplevcs=1. This should only be done in trusted
> repositories.
>
> Thanks to RyotaK (https://ryotak.net) of GMO Flatt Security Inc for reporting
> this issue.
>
> This is CVE-2025-4674 and https://go.dev/issue/74380.
>
> View the release notes for more information:
> https://go.dev/doc/devel/release#go1.24.5
>
> You can download binary and source distributions from the Go website:
> https://go.dev/dl/
>
> To compile from source using a Git clone, update to the release with
> git checkout go1.24.5 and build as usual.
>
> Thanks to everyone who contributed to the releases.
>
> Cheers,
> Carlos and David for the Go team
--
-Alan Coopersmith- alan.coopersmith@...cle.com
Oracle Solaris Engineering - https://blogs.oracle.com/solaris
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