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CVE-2025-62518

HIGH

8.1

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.

CVE Details

CVSS v3.1 Score8.1

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published10/21/2025

Last Modified10/21/2025

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-843

References

https://edera.dev/stories/tarmageddon(security-advisories@github.com)

https://github.com/astral-sh/tokio-tar/commit/22b3f884adb7a2adf1d3a8d03469533f5cbc8318(security-advisories@github.com)

https://github.com/astral-sh/tokio-tar/security/advisories/GHSA-j5gw-2vrg-8fgx(security-advisories@github.com)

https://github.com/astral-sh/uv/security/advisories/GHSA-w476-p2h3-79g9(security-advisories@github.com)

https://github.com/edera-dev/cve-tarmageddon(security-advisories@github.com)

IOC Correlations

No correlations recorded

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