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Fencer Vulns
high 8.8

CVE-2018-5146 in the critical feed json

An out of bounds memory write while processing Vorbis audio data was reported through the Pwn2Own contest.

published 2018-06-11 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-16932

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
11.9%
EPSS 11.9% chance of exploitation in 30 days, percentile 96%
public exploits
0
none known

Summary

An out of bounds memory write while processing Vorbis audio data was reported through the Pwn2Own contest. This vulnerability affects Firefox < 59.0.1, Firefox ESR < 52.7.2, and Thunderbird < 52.7.

Patch / fix

  • Mozilla Firefox 59.0.1
  • Mozilla Firefox ESR 52.7.2
  • Mozilla Thunderbird 52.7
  • libvorbis Debian 14, Debian 13, Debian 12 1.3.5-4.2
  • firefox-esr Debian 14, Debian 13, Debian 12 52.7.2esr-1
  • thunderbird Debian 14, Debian 13, Debian 12 1:52.7.0-1

debian advisories DEBIAN-CVE-2018-5146

  • firefox Ubuntu 14.04 LTS 59.0.1+build1-0ubuntu0.14.04.1
  • firefox Ubuntu 16.04 LTS 59.0.1+build1-0ubuntu0.16.04.1
  • libvorbis Ubuntu 14.04 LTS 1.3.2-1.3ubuntu1.2
  • libvorbis Ubuntu 16.04 LTS 1.3.5-3ubuntu0.2
  • thunderbird Ubuntu 14.04 LTS 1:52.7.0+build1-0ubuntu0.14.04.1
  • thunderbird Ubuntu 16.04 LTS 1:52.7.0+build1-0ubuntu0.16.04.1
  • thunderbird Ubuntu 18.04 LTS 1:52.7.0+build1-0ubuntu1

ubuntu advisories UBUNTU-CVE-2018-5146

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

  • firefox RHEL 6 52.7.2-1.el6_9
  • firefox RHEL 7 52.7.2-1.el7_4
  • thunderbird RHEL 6 52.7.0-1.el6_9
  • thunderbird RHEL 7 52.7.0-1.el7_4
  • libvorbis RHEL 7 1:1.3.3-8.el7.1
  • libvorbis RHEL 6 1:1.2.3-5.el6_9.1

red hat advisories RHSA-2018:0549RHSA-2018:0647RHSA-2018:0648RHSA-2018:1058RHSA-2018:0649

  • MozillaFirefox SLES for SAP 11 SP4, SLES 11 SP4, SLES 11 SP3-TERADATA +3 more 52.7.3esr-72.27.2
  • MozillaFirefox SLES for SAP 12 SP3, SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2 +6 more 52.7.3esr-109.25.1
  • libvorbis SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 1.2.0-79.20.6.1
  • libvorbis SLES for SAP 12 SP3, SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2 +6 more 1.3.3-10.6.1

suse advisories SUSE-SU-2018:0907-1SUSE-SU-2018:0850-1SUSE-SU-2018:0783-1SUSE-SU-2018:0784-1

  • firefox-esr openSUSE Tumbleweed 128.5.1-1.1
  • MozillaFirefox openSUSE Tumbleweed 92.0-1.2
  • MozillaThunderbird openSUSE Tumbleweed 91.1.1-1.1
  • libvorbis openSUSE Tumbleweed 1.3.7-1.6
  • MozillaThunderbird Package Hub 12 52.7-57.1

opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:10600-1openSUSE-SU-2024:10601-1openSUSE-SU-2024:11009-1openSUSE-SU-2018:0818-1openSUSE-SU-2018:0819-1

  • libvorbis Alpine 3.24, Alpine 3.23, Alpine 3.22 +17 more 1.3.6-r0

alpine advisories ALPINE-CVE-2018-5146

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

  • libvorbis Arch Linux 1.3.6-1
  • firefox Arch Linux 59.0.1-1
  • lib32-libvorbis Arch Linux 1.3.6-1
  • thunderbird Arch Linux 52.7.0-1

arch linux advisories AVG-367AVG-657AVG-658AVG-663

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-2018-5146 updated cvss 7.8

Mozilla: Vorbis audio processing out of bounds write (MFSA 2018-08)

  • Red Hat Enterprise Linux 5 libvorbis, xulrunner Red Hat Enterprise Linux 6 xulrunner Red Hat Enterprise Linux 7 xulrunner
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) firefox 52.7.2-1.el7_4, libvorbis 1.3.3-8.el7.1, thunderbird 52.7.0-1.el7_4 Red Hat Enterprise Linux Client Optional (v. 7) firefox 52.7.2-1.el7_4
    fixed: vendor fix RHSA-2018:0549
  • Red Hat Enterprise Linux ComputeNode (v. 7) libvorbis 1.3.3-8.el7.1 Red Hat Enterprise Linux ComputeNode Optional (v. 7) libvorbis-devel 1.3.3-8.el7.1, libvorbis-debuginfo 1.3.3-8.el7.1, libvorbis-devel-docs 1.3.3-8.el7.1
    fixed: vendor fix RHSA-2018:1058
  • Red Hat Enterprise Linux Desktop (v. 6) firefox 52.7.2-1.el6_9, libvorbis 1.2.3-5.el6_9.1, thunderbird 52.7.0-1.el6_9 Red Hat Enterprise Linux Desktop Optional (v. 6) firefox 52.7.2-1.el6_9 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) firefox 52.7.2-1.el7_4
    fixed: vendor fix RHSA-2018:0549
  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) thunderbird 52.7.0-1.el7_4
    fixed: vendor fix RHSA-2018:0648
  • Red Hat Enterprise Linux HPC Node (v. 6) libvorbis 1.2.3-5.el6_9.1
    fixed: vendor fix RHSA-2018:0649
  • Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox 52.7.2-1.el6_9 Red Hat Enterprise Linux Server (v. 6) firefox 52.7.2-1.el6_9, libvorbis 1.2.3-5.el6_9.1 Red Hat Enterprise Linux Server (v. 7) firefox 52.7.2-1.el7_4, libvorbis 1.3.3-8.el7.1 Red Hat Enterprise Linux Server Optional (v. 6) firefox 52.7.2-1.el6_9, thunderbird 52.7.0-1.el6_9 Red Hat Enterprise Linux Server Optional (v. 7) firefox 52.7.2-1.el7_4, thunderbird 52.7.0-1.el7_4 Red Hat Enterprise Linux Workstation (v. 6) firefox 52.7.2-1.el6_9, libvorbis 1.2.3-5.el6_9.1, thunderbird 52.7.0-1.el6_9
    +3 more products
    Red Hat Enterprise Linux Workstation (v. 7) firefox 52.7.2-1.el7_4, libvorbis 1.3.3-8.el7.1, thunderbird 52.7.0-1.el7_4 Red Hat Enterprise Linux Workstation Optional (v. 6) firefox 52.7.2-1.el6_9 Red Hat Enterprise Linux Workstation Optional (v. 7) firefox 52.7.2-1.el7_4
    fixed: vendor fix RHSA-2018:0549
  • Red Hat Enterprise Linux 6 esc Red Hat Enterprise Linux 7 esc Red Hat Enterprise Linux 8 esc, mozjs38, mozjs45, libvorbis, thunderbird
    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

11.91% chance of exploitation in the next 30 days, higher than 96% 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

Affected products

  • Mozilla Firefox
  • Mozilla Firefox ESR
  • Mozilla Thunderbird

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.