CVE-2026-33055
HighSummary
Biblioteka tar-rs do odczytu/zapisu archiwów tar w języku Rust w wersjach 0.4.44 i poniżej zawiera logikę warunkową, która pomija nagłówek rozmiaru PAX w przypadkach, gdy rozmiar nagłówka bazowego jest różny od zera. To może prowadzić do niezgodności w interpretacji rozmiaru plików przez różne archiwizatory.
Risk Assessment
Niezgodności w sposobie, w jaki różne parsery tar honorują rozmiar plików, mogą prowadzić do sytuacji, w której archiwa rozpakowywane przez różne narzędzia będą wyglądały inaczej, co może wpłynąć na integralność danych w organizacji.
Recommendation
Zaleca się aktualizację biblioteki tar-rs do wersji 0.4.45, aby zapewnić spójność w interpretacji archiwów tar i uniknąć potencjalnych problemów z rozpakowywaniem plików.
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Original NVD description (English source)
tar-rs is a tar archive reading/writing library for Rust. Versions 0.4.44 and below have conditional logic that skips the PAX size header in cases where the base header size is nonzero. As part of CVE-2025-62518, the astral-tokio-tar project was changed to correctly honor PAX size headers in the case where it was different from the base header. This is almost the inverse of the astral-tokio-tar issue. Any discrepancy in how tar parsers honor file size can be used to create archives that appear differently when unpacked by different archivers. In this case, the tar-rs (Rust tar) crate is an outlier in checking for the header size - other tar parsers (including e.g. Go archive/tar) unconditionally use the PAX size override. This can affect anything that uses the tar crate to parse archives and expects to have a consistent view with other parsers. This issue has been fixed in version 0.4.45.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

