astral-tokio-tar: `unpack_in` can chmod arbitrary directories by following symlinks
In versions 0.6.0 and earlier of astral-tokio-tar, the unpack_in API could inadvertently modify the permissions of external (i.e. non-archive) directories outside of the archive. An attacker could use this to contrite a tar archive that maliciously changes directory permissions outside of its intended hierarchy. This flaw only affects directories; individual file permissions cannot be modified via it.
See GHSA-j4xf-2g29-59ph for the equivalent flaw in the tar crate.
Versions 0.6.1 and newer of astral-tokio-tar use fs::symlink_metdata rather than fs::metadata, avoiding the traversal.
Users are advised to upgrade to version 0.6.1 or newer to address this advisory.
Users should experience no breaking changes as a result of the patch above.
tar vulnerability왜 이 VPI인가 (설명가능 · 실험적)
VPI 산정 기준
| 영향도(심각도 등급 추정치) | 20.00 |
| 악용 신호(추가 악용신호 없음) | ×1.00 |
| VPI | 20.00 |
VPI 공식 vpi-v1 기준