CVE-2020-10378

MEDIUM

Python Pillow < 7.1.0 - Out-of-Bounds Read

Title source: rule

Description

In libImaging/PcxDecode.c in Pillow before 7.1.0, an out-of-bounds read can occur when reading PCX files where state->shuffle is instructed to read beyond state->buffer.

References (8)

[Patch] https://github.com/python-pillow/Pillow/commit/6a83e4324738bb0452fbe8074a995b1c73f08de7#diff-9478f2787e3ae9668a15123b165c23ac

[Broken Link] https://github.com/python-pillow/Pillow/commits/master/src/libImaging

[Issue Tracking, Patch] https://github.com/python-pillow/Pillow/pull/4538

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEBCPE4F2VHTIT6EZA2YZQZLPVDEBJGD/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HOKHNWV2VS5GESY7IBD237E7C6T3I427/

[Product] https://pillow.readthedocs.io/en/stable/releasenotes/7.1.0.html

[Third Party Advisory] https://usn.ubuntu.com/4430-1/

[Third Party Advisory] https://usn.ubuntu.com/4430-2/

Scores

CVSS v3 5.5

EPSS 0.0032

EPSS Percentile 54.6%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Classification

CWE

CWE-125

Status published

Affected Products (7)

python/pillow < 7.1.0

fedoraproject/fedora

canonical/ubuntu_linux

pypi/pillow < 7.1.0PyPI

Timeline

Published Jun 25, 2020

Tracked Since Feb 18, 2026