Tarfile infinite loop during parsing with negative member offset
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 7.5epss 0.6%
probabilidad de explotación
0.6%top 51% de las CVE
explotación observada
noninguna fuente lo reporta
There is a defect in the CPython “tarfile” module affecting the “TarFile” extraction and entry enumeration APIs. The tar implementation would process tar archives with negative offsets without error, resulting in an infinite loop and deadlock during the parsing of maliciously crafted tar archives.
This vulnerability can be mitigated by including the following patch after importing the “tarfile” module: https://gist.github.com/sethmlarson/1716ac5b82b73dbcbf23ad2eff8b33e1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Productos afectados
Python Software Foundation · CPythonReferencias
https://gist.github.com/sethmlarson/1716ac5b82b73dbcbf23ad2eff8b33e1https://github.com/python/cpython/commit/57f5981d6260ed21266e0c26951b8564cc252bc2https://github.com/python/cpython/commit/7040aa54f14676938970e10c5f74ea93cd56aa38https://github.com/python/cpython/commit/73f03e4808206f71eb6b92c579505a220942ef19https://github.com/python/cpython/commit/b4ec17488eedec36d3c05fec127df71c0071f6cbhttps://github.com/python/cpython/commit/c9d9f78feb1467e73fd29356c040bde1c104f29fhttps://github.com/python/cpython/commit/cdae923ffe187d6ef916c0f665a31249619193fehttps://github.com/python/cpython/commit/fbc2a0ca9ac8aff6887f8ddf79b87b4510277227https://github.com/python/cpython/issues/130577https://github.com/python/cpython/pull/137027https://mail.python.org/archives/list/security-announce@python.org/thread/ZULLF3IZ726XP5EY7XJ7YIN3K5MDYR2D/http://www.openwall.com/lists/oss-security/2025/07/28/1