CVE-2026-42497: BINGOS Archive::Tar, обхождане на път

Описание

Оригинално описание

Archive::Tar versions before 3.08 for Perl extract hardlinks to attacker controlled paths outside the extraction directory. _make_special_file() passes the tar header's linkname to link() without validating it against absolute paths or .. segments, creating a hardlink that shares the victim file's inode. A subsequent write through the extracted name modifies the victim file, and the post-extraction chmod, chown, and utime block in _extract_file() (guarded only against symlinks via -l) applies the tar header's mode, owner, and timestamps to the shared inode during extraction alone.

Засегнати продукти

• BINGOS Archive::Tar: преди 3.08

Вид слабост

• CWE-59 Неправилно разрешаване на връзка преди достъп до файл
• CWE-732 Incorrect Permission Assignment for Critical Resource

История

Други уязвимости в BINGOS Archive::Tar

• 7.5CVE-2026-9538
• 9.1CVE-2026-42496

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-42497
• https://nvd.nist.gov/vuln/detail/CVE-2026-42497
• https://github.com/jib/archive-tar-new/commit/17c873492a05eddc0de18c1485e0b2cccd5a9158.patch
• https://metacpan.org/release/BINGOS/Archive-Tar-3.08/changes
• https://www.cve.org/CVERecord?id=CVE-2026-42496