Описание
tarfile.extractall() with the 'data' or 'tar' filter could be bypassed by a crafted archive where a hardlink references a symlink stored at a deeper name than the hardlink itself. The extraction fallback validated the symlink at it's archived location but recreated it at the hardlink's shallower path, letting a relative target the filter judged contained escape the destination directory. This allowed a malicious tar archive to create a symlink pointing outside the destination, enabling out-of-destination file reads or writes. This was an incomplete fix of CVE-2025-4330.
Пакеты
| Пакет | Статус | Версия исправления | Релиз | Тип |
|---|---|---|---|---|
| python3.14 | fixed | 3.14.7-1 | package | |
| python3.13 | fixed | 3.13.15-1 | package | |
| python3.13 | fixed | 3.13.5-2+deb13u5 | trixie | package |
| python3.11 | removed | package | ||
| python3.11 | postponed | bookworm | package | |
| python3.9 | removed | package | ||
| python3.9 | postponed | bullseye | package | |
| python2.7 | removed | package | ||
| python2.7 | end-of-life | bullseye | package | |
| pypy3 | fixed | 8.0.0+dfsg-1 | package | |
| pypy3 | no-dsa | trixie | package | |
| pypy3 | not-affected | bookworm | package | |
| pypy3 | not-affected | bullseye | package |
Примечания
https://github.com/python/cpython/issues/151558
https://github.com/python/cpython/pull/151559
https://github.com/python/cpython/commit/672825e2f36a57e173959b0d9d409d4560dab8df (v3.15.0b4)
https://github.com/python/cpython/commit/79c06bd5c6afa3c440d50faf7ee1b147c8832b4c (v3.14.7)
https://github.com/python/cpython/commit/771d12dda5140313db0ac550292987975651bbde (v3.13.15)
https://github.com/python/cpython/commit/be13e86f6b9788a6f4d0419dffef72cbae5865c9 (v3.11.16)
Связанные уязвимости
tarfile.extractall() with the 'data' or 'tar' filter could be bypassed by a crafted archive where a hardlink references a symlink stored at a deeper name than the hardlink itself. The extraction fallback validated the symlink at it's archived location but recreated it at the hardlink's shallower path, letting a relative target the filter judged contained escape the destination directory. This allowed a malicious tar archive to create a symlink pointing outside the destination, enabling out-of-destination file reads or writes. This was an incomplete fix of CVE-2025-4330.
tarfile.extractall() with the 'data' or 'tar' filter could be bypassed by a crafted archive where a hardlink references a symlink stored at a deeper name than the hardlink itself. The extraction fallback validated the symlink at it's archived location but recreated it at the hardlink's shallower path, letting a relative target the filter judged contained escape the destination directory. This allowed a malicious tar archive to create a symlink pointing outside the destination, enabling out-of-destination file reads or writes. This was an incomplete fix of CVE-2025-4330.
tarfile.extractall() with the 'data' or 'tar' filter could be bypassed by a crafted archive where a hardlink references a symlink stored at a deeper name than the hardlink itself. The extraction fallback validated the symlink at it's archived location but recreated it at the hardlink's shallower path, letting a relative target the filter judged contained escape the destination directory. This allowed a malicious tar archive to create a symlink pointing outside the destination, enabling out-of-destination file reads or writes. This was an incomplete fix of CVE-2025-4330.
