GitHub Advisoryadvisory · crates.io
GHSA-9mc5-7qhg-fp3w Below has Incorrect Permission Assignment for Critical Resource
HIGH
Official page ↗
- Aliases
- CVE-2025-27591
- Ecosystem
- crates.io
- Packages
- below
- Severity
- High
- CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-732
- Reviewed
- 2025-03-11
Affected packages
• crates.io below: < 0.9.0 → fixed in 0.9.0
Description
Impact
A privilege escalation vulnerability existed in the Below service prior to v0.9.0 due to the creation of a world-writable directory at /var/log/below. This could have allowed local unprivileged users to escalate to root privileges through symlink attacks that manipulate files such as /etc/shadow.
Patches
https://github.com/facebookincubator/below/commit/10e73a21d67baa2cd613ee92ce999cda145e1a83
This is included in version 0.9.0
Workarounds
Change the permission on `/var/log/below` manually
References
https://www.facebook.com/security/advisories/cve-2025-27591
https://www.cve.org/CVERecord?id=CVE-2025-27591
Related
Alias · CVE (1)
- CVE-2025-27591 A privilege escalation vulnerability existed in the Below service prior to v0.9.0 due to the creation of a world-writable directory at… vulnerability
Weakness · CWE (1)
- CWE-732 Incorrect Permission Assignment for Critical Resource weakness
References
- https://github.com/facebookincubator/below/security/advisories/GHSA-9mc5-7qhg-fp3w web
- https://nvd.nist.gov/vuln/detail/CVE-2025-27591 advisory
- https://github.com/facebookincubator/below/commit/10e73a21d67baa2cd613ee92ce999cda145e1a83 web
- https://github.com/facebookincubator/below/commit/da9382e6e3e332fd2c3195e22f34977f83f0f1f3 web
- https://github.com/facebookincubator/below package
- https://rustsec.org/advisories/RUSTSEC-2025-0149.html web
- https://www.facebook.com/security/advisories/cve-2025-27591 web
- https://www.openwall.com/lists/oss-security/2025/03/12/1 web
- http://www.openwall.com/lists/oss-security/2025/03/12/1 web