4.3

CVE-2025-8291

ZIP64 End of Central Directory (EOCD) Locator record offset not checked

The 'zipfile' module would not check the validity of the ZIP64 End of
Central Directory (EOCD) Locator record offset value would not be used to
locate the ZIP64 EOCD record, instead the ZIP64 EOCD record would be
assumed to be the previous record in the ZIP archive. This could be abused
to create ZIP archives that are handled differently by the 'zipfile' module
compared to other ZIP implementations.


Remediation maintains this behavior, but checks that the offset specified
in the ZIP64 EOCD Locator record matches the expected value.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerPython Software Foundation
≫
Produkt CPython
Default Statusunaffected
Version 0
Version < 3.10.19
Status affected
Version 3.11.0
Version < 3.11.14
Status affected
Version 3.12.0
Version < 3.12.12
Status affected
Version 3.13.0
Version < 3.13.10
Status affected
Version 3.14.0
Version < 3.14.1
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.35% 0.273
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
cna@python.org 4.3 2.8 1.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CWE-1285 Improper Validation of Specified Index, Position, or Offset in Input

The product receives input that is expected to specify an index, position, or offset into an indexable resource such as a buffer or file, but it does not validate or incorrectly validates that the specified index/position/offset has the required properties.

https://github.com/python/cpython/pull/139702
https://mail.python.org/archives/list/security-announce@python.org/thread/QECOPWMTH4VPPJAXAH2BGTA4XADOP62G/
https://github.com/python/cpython/commit/162997bb70e067668c039700141770687bc8f267
https://github.com/python/cpython/commit/333d4a6f4967d3ace91492a39ededbcf3faa76a6
https://github.com/python/cpython/issues/139700
https://github.com/python/cpython/commit/1d29afb0d6218aa8fb5e1e4a6133a4778d89bb46
https://github.com/python/cpython/commit/76437ac248ad8ca44e9bf697b02b1e2241df2196
https://github.com/python/cpython/commit/8392b2f0d35678407d9ce7d95655a5b77de161b4
https://github.com/python/cpython/commit/bca11ae7d575d87ed93f5dd6a313be6246e3e388
https://github.com/python/cpython/commit/d11e69d6203080e3ec450446bfed0516727b85c3
https://github.com/google/security-research/security/advisories/GHSA-hhv7-p4pg-wm6p
https://github.com/psf/advisory-database/blob/main/advisories/python/PSF-2025-12.json