Vulnerability advisory
RUSTSEC-2026-0367
Insecure Preservation of SUID/SGID Bits during ZIP Extraction Leading to Potential Privilege Escalation
Also known as GHSA-vv5m-jxxh-4627
- CVSS 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Affected versions
zip crates.io
All zip advisories →| Affected | Fixed in |
|---|---|
0.0.0-0 to before 9.0.0 | 9.0.0Advisories → |
Description
The zip crate preserves privileged Unix permission bits (SUID, SGID, and sticky bits) from ZIP external_attributes during extraction, instead of masking them to safe permission bits. If a privileged process (for example, root in an installer, CI/CD pipeline, or container build) extracts an attacker-controlled ZIP archive using ZipArchive::extract() or the stream extraction API, files can be created as setuid-root or setgid. This behavior allows the creation of SUID/SGID files during extraction, which can lead to local privilege escalation depending on the execution environment.
For further details see: https://github.com/zip-rs/zip2/security/advisories/GHSA-vv5m-jxxh-4627