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Fencer Vulns
high 8.8

CVE-2018-20330 json

The tjLoadImage function in libjpeg-turbo 2.0.1 has an integer overflow with a resultant heap-based...

published 2018-12-21 7 y ago modified 2026-07-23 3 mo ago also EUVD-2018-12888 , JLSEC-2025-178

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.0%
EPSS 2.0% chance of exploitation in 30 days, percentile 80%
public exploits
0
none known

Summary

The tjLoadImage function in libjpeg-turbo 2.0.1 has an integer overflow with a resultant heap-based buffer overflow via a BMP image because multiplication of pitch and height is mishandled, as demonstrated by tjbench.

Patch / fix

  • julia JpegTurbo_jll 2.1.0+0
  • libjpeg-turbo openSUSE Tumbleweed 8.2.2-65.2

opensuse advisories openSUSE-SU-2024:10952-1

  • libjpeg-turbo Alpine 3.24, Alpine 3.23, Alpine 3.22 +12 more 2.0.2-r0

alpine advisories ALPINE-CVE-2018-20330

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-2018-20330 updated cvss 4.3

libjpeg-turbo: heap-based buffer overflow in tjLoadImage

  • Red Hat Enterprise Linux 6 libjpeg-turbo Red Hat Enterprise Linux 7 turbojpeg, libjpeg-turbo, libjpeg-turbo-utils Red Hat Enterprise Linux 8 turbojpeg, libjpeg-turbo, libjpeg-turbo-utils
    not affected: vulnerable code not present

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

2.01% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P
OSV 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
julia JpegTurbo_jll
<2.1.0+0
2.1.0+0

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.