certfr_avis - certfr-2025-avi-0634

CERTFR-2025-AVI-0634

Vulnerability from certfr_avis

Une vulnérabilité a été découverte dans Python. Elle permet à un attaquant de provoquer un déni de service à distance.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

	Vendor	Product	Description
	Python	CPython	CPython sans le dernier correctif de sécurité

References

Title

Publication Time

CVE-2025-8194 (GCVE-0-2025-8194)

Vulnerability from cvelistv5

Published

2025-07-28 18:42

Modified

2025-10-09 18:38

Severity ?

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Summary

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

References

URL

Tags

	https://github.com/python/cpython/issues/130577	issue-tracking
	https://github.com/python/cpython/pull/137027	patch
	https://mail.python.org/archives/list/security-announce@python.org/thread/ZULLF3IZ726XP5EY7XJ7YIN3K5MDYR2D/	vendor-advisory
	https://github.com/python/cpython/commit/7040aa54f14676938970e10c5f74ea93cd56aa38	patch
	https://github.com/python/cpython/commit/cdae923ffe187d6ef916c0f665a31249619193fe	patch
	https://gist.github.com/sethmlarson/1716ac5b82b73dbcbf23ad2eff8b33e1	mitigation
	https://github.com/python/cpython/commit/c9d9f78feb1467e73fd29356c040bde1c104f29f	patch
	https://github.com/python/cpython/commit/fbc2a0ca9ac8aff6887f8ddf79b87b4510277227	patch
	https://github.com/python/cpython/commit/57f5981d6260ed21266e0c26951b8564cc252bc2	patch
	https://github.com/python/cpython/commit/73f03e4808206f71eb6b92c579505a220942ef19	patch
	https://github.com/python/cpython/commit/b4ec17488eedec36d3c05fec127df71c0071f6cb	patch

Impacted products

	Vendor	Product	Version
	Python Software Foundation	CPython	Version: 0 Version: 3.10.0 Version: 3.11.0 Version: 3.12.0 Version: 3.13.0 Version: 3.14.0a1

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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