oss-sec mailing list archives
Re: Risk of local privilege escalation in GNU Guix
From: Leo Famulari <leo () famulari name>
Date: Mon, 5 Apr 2021 12:43:15 -0400
On Thu, Mar 18, 2021 at 05:27:09PM -0400, Leo Famulari wrote:
# Vulnerability The attack consists in having an unprivileged user spawn a build process, for instance with `guix build`, that makes its build directory world-writable. The user then creates a hardlink to a root-owned file such as `/etc/shadow` in that build directory. If the user passed the `--keep-failed` option and the build eventually fails, the daemon changes ownership of the whole build tree, including the hardlink, to the user. At that point, the user has write access to the target file.
We applied for a CVE ID via MITRE's web form [0] on March 18, 2021. We have not yet received a reply. Does anybody know if that is expected? Is there another method for independent projects to receive CVE IDs? [0] https://cveform.mitre.org/
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Current thread:
- Re: Risk of local privilege escalation in GNU Guix Leo Famulari (Apr 05)
- Re: Risk of local privilege escalation in GNU Guix Henri Salo (Apr 05)
- Re: Risk of local privilege escalation in GNU Guix Jan Engelhardt (Apr 05)
- Re: Risk of local privilege escalation in GNU Guix Leo Famulari (Apr 05)
- Re: Risk of local privilege escalation in GNU Guix Leo Famulari (Apr 05)
- Re: Risk of local privilege escalation in GNU Guix Jan Engelhardt (Apr 05)
- Re: Risk of local privilege escalation in GNU Guix Leo Famulari (Apr 09)
- <Possible follow-ups>
- Re: Risk of local privilege escalation in GNU Guix Leo Famulari (Apr 10)
- Re: Risk of local privilege escalation in GNU Guix Henri Salo (Apr 05)