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Fencer Vulns
critical 9.8

CVE-2020-5312 json

PCX P mode buffer overflow in Pillow

published 2020-01-03 6 y ago modified 2026-09-08 2 mo ago also BIT-pillow-2020-5312 , EUVD-2020-0136 , GHSA-p49h-hjvm-jg3h , PYSEC-2020-83

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.7%
EPSS 3.7% chance of exploitation in 30 days, percentile 89%
public exploits
0
none known

Summary

libImaging/PcxDecode.c in Pillow before 6.2.2 has a PCX P mode buffer overflow.

Patch / fix

  • pypi pillow 6.2.2
  • bitnami pillow 6.2.2
  • python pillow 6.2.2
  • pillow Debian 14, Debian 13, Debian 12 7.0.0-1

debian advisories DEBIAN-CVE-2020-5312

  • pillow Ubuntu 16.04 LTS 3.1.2-0ubuntu1.3
  • pillow Ubuntu 18.04 LTS 5.1.0-1ubuntu0.2
  • pillow Ubuntu Pro 14.04 LTS 2.3.0-1ubuntu3.4+esm1

ubuntu advisories UBUNTU-CVE-2020-5312

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • python-pillow RHEL 7 2.0.0-20.gitd1c6db8.el7_7
  • python-pillow-qt RHEL 7 2.0.0-20.gitd1c6db8.el7_7
  • python-pillow-tk RHEL 7 2.0.0-20.gitd1c6db8.el7_7
  • python-pillow-sane RHEL 7 2.0.0-20.gitd1c6db8.el7_7
  • python-pillow RHEL 8 5.1.1-10.el8_1
  • python3-pillow RHEL 8 5.1.1-10.el8_1
  • python-imaging RHEL 6 1.1.6-20.el6_10
  • python-imaging-tk RHEL 6 1.1.6-20.el6_10

red hat advisories RHSA-2020:0578RHSA-2020:0580RHSA-2020:0566RHSA-2020:0898

  • kibana OpenStack Cloud Crowbar 9, OpenStack Cloud 9 4.6.3-4.3.2
  • grafana OpenStack Cloud Crowbar 9, OpenStack Cloud 9 6.2.5-3.12.2
  • ansible1 OpenStack Cloud 9 1.9.6-9.7.2
  • ardana-mq OpenStack Cloud 9 9.0+git.1593618110.cbd1a37-3.16.2
  • crowbar-core OpenStack Cloud Crowbar 9 6.0+git.1594619891.b75a61d0d-3.25.5
  • rubygem-puma OpenStack Cloud Crowbar 9 2.16.0-4.9.1
  • ardana-glance OpenStack Cloud 9 9.0+git.1593631708.9354a78-3.13.2
  • ardana-manila OpenStack Cloud 9 9.0+git.1594158642.b5905e4-3.12.2

suse advisories SUSE-RU-2020:2161-1SUSE-RU-2020:2072-1SUSE-SU-2020:2057-1SUSE-SU-2020:1901-1

  • py3-pillow Alpine 3.24, Alpine 3.23, Alpine 3.22 +10 more 6.2.2-r0

alpine advisories ALPINE-CVE-2020-5312

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-5312 updated cvss 9.8

python-pillow: improperly restricted operations on memory buffer in libImaging/PcxDecode.c

  • Red Hat Enterprise Linux 5 python-imaging
    affected: no fix planned “Out of support scope”
  • Red Hat Quay v3 quay/quay-rhel8 v3.4.0-51, quay/clair-rhel8 v3.4.0-25, quay/quay-builder-rhel8 v3.4.0-18, quay/quay-operator-bundle v3.4.0-89, quay/quay-operator-rhel8 v3.4.0-132, quay/quay-bridge-operator-bundle v3.4.0-3, +5 more
    fixed: vendor fix RHSA-2021:0420
  • Red Hat Enterprise Linux AppStream (v. 8) python-pillow 5.1.1-10.el8_1, python3-pillow 5.1.1-10.el8_1
    fixed: vendor fix RHSA-2020:0580
  • Red Hat Enterprise Linux AppStream E4S (v. 8.0) python-pillow 5.1.1-10.el8_0, python3-pillow 5.1.1-10.el8_0
    fixed: vendor fix RHSA-2020:0566
  • Red Hat Enterprise Linux Client (v. 7) python-pillow 2.0.0-20.gitd1c6db8.el7_7 Red Hat Enterprise Linux Client Optional (v. 7) python-pillow 2.0.0-20.gitd1c6db8.el7_7, python-pillow-qt 2.0.0-20.gitd1c6db8.el7_7, python-pillow-tk 2.0.0-20.gitd1c6db8.el7_7, python-pillow-sane 2.0.0-20.gitd1c6db8.el7_7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) python-pillow 2.0.0-20.gitd1c6db8.el7_7, python-pillow-qt 2.0.0-20.gitd1c6db8.el7_7, python-pillow-tk 2.0.0-20.gitd1c6db8.el7_7, python-pillow-sane 2.0.0-20.gitd1c6db8.el7_7
    fixed: vendor fix RHSA-2020:0578
  • Red Hat Enterprise Linux Desktop (v. 6) python-imaging 1.1.6-20.el6_10 Red Hat Enterprise Linux Desktop Optional (v. 6) python-imaging-tk 1.1.6-20.el6_10, python-imaging-sane 1.1.6-20.el6_10 Red Hat Enterprise Linux HPC Node Optional (v. 6) python-imaging 1.1.6-20.el6_10, python-imaging-tk 1.1.6-20.el6_10, python-imaging-sane 1.1.6-20.el6_10 Red Hat Enterprise Linux Server (v. 6) python-imaging 1.1.6-20.el6_10
    fixed: vendor fix RHSA-2020:0898
  • Red Hat Enterprise Linux Server (v. 7) python-pillow 2.0.0-20.gitd1c6db8.el7_7
    fixed: vendor fix RHSA-2020:0578
  • Red Hat Enterprise Linux Server Optional (v. 6) python-imaging 1.1.6-20.el6_10, python-imaging-tk 1.1.6-20.el6_10, python-imaging-sane 1.1.6-20.el6_10
    fixed: vendor fix RHSA-2020:0898
show 5 more
  • Red Hat Enterprise Linux Server Optional (v. 7) python-pillow 2.0.0-20.gitd1c6db8.el7_7, python-pillow-qt 2.0.0-20.gitd1c6db8.el7_7, python-pillow-tk 2.0.0-20.gitd1c6db8.el7_7, python-pillow-sane 2.0.0-20.gitd1c6db8.el7_7
    fixed: vendor fix RHSA-2020:0578
  • Red Hat Enterprise Linux Workstation (v. 6) python-imaging 1.1.6-20.el6_10
    fixed: vendor fix RHSA-2020:0898
  • Red Hat Enterprise Linux Workstation (v. 7) python-pillow 2.0.0-20.gitd1c6db8.el7_7
    fixed: vendor fix RHSA-2020:0578
  • Red Hat Enterprise Linux Workstation Optional (v. 6) python-imaging-tk 1.1.6-20.el6_10, python-imaging-sane 1.1.6-20.el6_10
    fixed: vendor fix RHSA-2020:0898
  • Red Hat Enterprise Linux Workstation Optional (v. 7) python-pillow 2.0.0-20.gitd1c6db8.el7_7, python-pillow-qt 2.0.0-20.gitd1c6db8.el7_7, python-pillow-tk 2.0.0-20.gitd1c6db8.el7_7, python-pillow-sane 2.0.0-20.gitd1c6db8.el7_7
    fixed: vendor fix RHSA-2020:0578

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.69% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P
OSV 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
pypi pillow
<6.2.2
6.2.2
bitnami pillow
<6.2.2
6.2.2

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.