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Fencer Vulns
critical 9.8

CVE-2020-12268 json

jbig2_image_compose in jbig2_image.c in Artifex jbig2dec before 0.18 has a heap-based buffer overflow.

published 2020-04-27 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-4581

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.7%
EPSS 2.7% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

jbig2_image_compose in jbig2_image.c in Artifex jbig2dec before 0.18 has a heap-based buffer overflow.

Patch / fix

  • artifex jbig2dec 0.18
  • jbig2dec Debian 14, Debian 13, Debian 12 0.18-1

debian advisories DEBIAN-CVE-2020-12268

  • jbig2dec Ubuntu Pro 16.04 LTS 0.12+20150918-1ubuntu0.1+esm2

ubuntu advisories UBUNTU-CVE-2020-12268

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

  • jbig2dec RHEL 8 0.14-4.el8_2
  • jbig2dec-libs RHEL 8 0.14-4.el8_2
  • jbig2dec RHEL 8.0 E4S 0.14-4.el8_0
  • jbig2dec-libs RHEL 8.0 E4S 0.14-4.el8_0
  • jbig2dec RHEL 8.1 EUS 0.14-4.el8_1
  • jbig2dec-libs RHEL 8.1 EUS 0.14-4.el8_1

red hat advisories RHSA-2020:3043RHSA-2020:2971RHSA-2020:2897

  • ghostscript SLES for SAP 15, SLES 15-LTSS, SLE Module for Basesystem 15 SP1 +2 more 9.52-3.27.2
  • libspectre SLES for SAP 15, SLES 15-LTSS, SLE Module for Desktop Applications 15 SP1 +2 more 0.2.8-3.10.1
  • ghostscript SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +16 more 9.52-23.34.1
  • libspectre SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +16 more 0.2.7-12.10.1

suse advisories SUSE-SU-2020:1220-1SUSE-SU-2020:1212-1

  • ghostscript openSUSE Tumbleweed 9.54.0-2.2
  • ghostscript openSUSE Leap 15.1 9.52-lp151.3.12.1
  • libspectre openSUSE Leap 15.1 0.2.8-lp151.3.3.1
  • ghostscript-mini openSUSE Leap 15.1 9.52-lp151.3.12.1

opensuse advisories openSUSE-SU-2024:10783-1openSUSE-SU-2020:0653-1

  • jbig2dec Alpine 3.10 0.16-r1
  • jbig2dec Alpine 3.24, Alpine 3.23, Alpine 3.22 +10 more 0.18-r0
  • jbig2dec Alpine 3.9 0.15-r1

alpine advisories ALPINE-CVE-2020-12268

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-2020-12268 updated cvss 9.8

jbig2dec: heap-based buffer overflow in jbig2_image_compose in jbig2_image.c

  • Red Hat Enterprise Linux AppStream (v. 8) jbig2dec 0.14-4.el8_2, jbig2dec-libs 0.14-4.el8_2
    fixed: vendor fix RHSA-2020:2897
  • Red Hat Enterprise Linux AppStream E4S (v. 8.0) jbig2dec 0.14-4.el8_0, jbig2dec-libs 0.14-4.el8_0
    fixed: vendor fix RHSA-2020:3043
  • Red Hat Enterprise Linux AppStream EUS (v. 8.1) jbig2dec 0.14-4.el8_1, jbig2dec-libs 0.14-4.el8_1
    fixed: vendor fix RHSA-2020:2971

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

2.74% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugs.chromium.org https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=20332 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
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

Classification

Weakness

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.