Description
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.
Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| astral-tokio-tar | โ | โ |
| tokio-tar | โ | โ |
| unknown | โ | โ |
References
Similar Threats
- Unknown GHSA-3cv2-h65g-fgmm
- Unknown RUSTSEC-2026-0145
- Unknown GHSA-fp55-jw48-c537
- Low GHSA-xx64-wwv2-hcqq
- Unknown RUSTSEC-2026-0112
Exploit Protection
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