CVE-2025-62518
astral-tokio-tar Vulnerable to PAX Header Desynchronization
HIGH 8.1EPSS 0.7%
astral-tokio-tar is a tar archive reading/writing library for async Rust. Versions of astral-tokio-tar prior to 0.5.6 contain a boundary parsing vulnerability that allows attackers to smuggle additional archive entries by exploiting inconsistent PAX/ustar header handling. When processing archives with PAX-extended headers containing size overrides, the parser incorrectly advances stream position based on ustar header size (often zero) instead of the PAX-specified size, causing it to interpret file content as legitimate tar headers. This issue has been patched in version 0.5.6. There are no workarounds.
- Affected
- astral-sh · tokio-tar
- CVSS v3.1 GITHUB
- 8.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N - EPSS
- 0.70% chance of exploitation in the next 30 days, 52nd percentile
- Published
- 2025-10-21
- Updated
- 2025-10-22
Proof-of-concept exploits (1)
- AirineiAndrei/Tarmageddon-CVE-2025-62518-0★ · 2026-01-19