Out-of-bounds write in Mozilla Firefox
Priority MEDIUM 52CWE-787Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 18 fixed, 3 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.
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.
Why it matters now
EPSS 0.11905 96th percentileScored 2026-11-07
Fix Partial Firefox (Mozilla): 59.0.1Firefox ESR (Mozilla): 52.7.2+1 more productRed Hat: 5 advisoriesRed Hat: 18 fixed, 3 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Mozilla | Firefox | before 59.0.1 | 59.0.1 | Patch available | CNA |
| Mozilla | Firefox ESR | before 52.7.2 | 52.7.2 | Patch available | CNA |
| Mozilla | Thunderbird | before 52.7 | 52.7 | Patch available | CNA |
- Firefox VendorMozilla Affected before 59.0.1 Fixed in 59.0.1 Patch available CNA
- Firefox ESR VendorMozilla Affected before 52.7.2 Fixed in 52.7.2 Patch available CNA
- Thunderbird VendorMozilla Affected before 52.7 Fixed in 52.7 Patch available CNA
CPE configurations NVD · 21
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* | 7.4 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* | 7.6 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* | 7.4 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* | 7.5 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* | 7.6 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:* | 7.4 | Vulnerable | Red Hat |
- cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* Versions 7.5 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
Show 11 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* | 7.6 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* | 14.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* | 16.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* | 17.10 | Vulnerable | Canonical |
| cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | before 52.7.2; before 59.0.1 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* | before 52.7.0 | Vulnerable | Mozilla |
- cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* Versions 7.6 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* Versions 17.10 Vulnerable ·Canonical
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 52.7.2; before 59.0.1 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 52.7.0 Vulnerable ·Mozilla
Remediation
- Fix · CNA Firefox (Mozilla) Fixed in 59.0.1
- Fix · CNA Firefox ESR (Mozilla) Fixed in 52.7.2
- Fix · CNA Thunderbird (Mozilla) Fixed in 52.7
Red Hat 5 advisories
- RHSA-2018:1058 Released 2018-04-10 · Red Hat rating Importantlibvorbis security update
- Red Hat Enterprise Linux Client (v. 7) libvorbis-1:1.3.3-8.el7.1
- Red Hat Enterprise Linux Client Optional (v. 7) libvorbis-devel-1:1.3.3-8.el7.1, libvorbis-devel-docs-1:1.3.3-8.el7.1
- Red Hat Enterprise Linux ComputeNode (v. 7) libvorbis-1:1.3.3-8.el7.1
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) libvorbis-devel-1:1.3.3-8.el7.1, libvorbis-devel-docs-1:1.3.3-8.el7.1
- Red Hat Enterprise Linux Server (v. 7) libvorbis-1:1.3.3-8.el7.1, libvorbis-1:1.3.3-8.el7.1.ppc
- Red Hat Enterprise Linux Server Optional (v. 7) libvorbis-devel-1:1.3.3-8.el7.1, libvorbis-devel-1:1.3.3-8.el7.1.ppc, libvorbis-devel-docs-1:1.3.3-8.el7.1
- Red Hat Enterprise Linux Workstation (v. 7) libvorbis-1:1.3.3-8.el7.1
- Red Hat Enterprise Linux Workstation Optional (v. 7) libvorbis-devel-1:1.3.3-8.el7.1, libvorbis-devel-docs-1:1.3.3-8.el7.1
- RHSA-2018:0647 Released 2018-04-05 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux Desktop (v. 6) thunderbird-52.7.0-1.el6_9
- Red Hat Enterprise Linux Server Optional (v. 6) thunderbird-52.7.0-1.el6_9
- Red Hat Enterprise Linux Workstation (v. 6) thunderbird-52.7.0-1.el6_9
- RHSA-2018:0648 Released 2018-04-05 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux Client (v. 7) thunderbird-52.7.0-1.el7_4
- Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-52.7.0-1.el7_4
- Red Hat Enterprise Linux Workstation (v. 7) thunderbird-52.7.0-1.el7_4
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) thunderbird-52.7.0-1.el7_4
Show 2 more Red Hat advisories
- RHSA-2018:0649 Released 2018-04-05 · Red Hat rating Importantlibvorbis security update
- Red Hat Enterprise Linux Desktop (v. 6) libvorbis-1:1.2.3-5.el6_9.1
- Red Hat Enterprise Linux Desktop Optional (v. 6) libvorbis-devel-1:1.2.3-5.el6_9.1, libvorbis-devel-docs-1:1.2.3-5.el6_9.1
- Red Hat Enterprise Linux HPC Node (v. 6) libvorbis-1:1.2.3-5.el6_9.1
- Red Hat Enterprise Linux HPC Node Optional (v. 6) libvorbis-devel-1:1.2.3-5.el6_9.1, libvorbis-devel-docs-1:1.2.3-5.el6_9.1
- Red Hat Enterprise Linux Server (v. 6) libvorbis-1:1.2.3-5.el6_9.1, libvorbis-1:1.2.3-5.el6_9.1.ppc
- Red Hat Enterprise Linux Server Optional (v. 6) libvorbis-devel-1:1.2.3-5.el6_9.1, libvorbis-devel-1:1.2.3-5.el6_9.1.ppc, libvorbis-devel-docs-1:1.2.3-5.el6_9.1
- Red Hat Enterprise Linux Workstation (v. 6) libvorbis-1:1.2.3-5.el6_9.1
- Red Hat Enterprise Linux Workstation Optional (v. 6) libvorbis-devel-1:1.2.3-5.el6_9.1, libvorbis-devel-docs-1:1.2.3-5.el6_9.1
- RHSA-2018:0549 Released 2018-03-19 · Red Hat rating Criticalfirefox security update
- Red Hat Enterprise Linux Client (v. 7) firefox-52.7.2-1.el7_4
- Red Hat Enterprise Linux Client Optional (v. 7) firefox-52.7.2-1.el7_4
- Red Hat Enterprise Linux Desktop (v. 6) firefox-52.7.2-1.el6_9
- Red Hat Enterprise Linux Desktop Optional (v. 6) firefox-52.7.2-1.el6_9
- 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
- Red Hat Enterprise Linux Server (v. 7) firefox-52.7.2-1.el7_4
- Red Hat Enterprise Linux Server Optional (v. 6) firefox-52.7.2-1.el6_9, firefox-52.7.2-1.el6_9.ppc
- Red Hat Enterprise Linux Server Optional (v. 7) firefox-52.7.2-1.el7_4, firefox-52.7.2-1.el7_4.ppc
- Red Hat Enterprise Linux Workstation (v. 6) firefox-52.7.2-1.el6_9
- Red Hat Enterprise Linux Workstation (v. 7) firefox-52.7.2-1.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
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) firefox-52.7.2-1.el7_4
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
Mozilla Firefox, Firefox ESR, Thunderbird — RHSA-2018:0647
6 records Highest priority Priority MEDIUM 5 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2018-03693 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 49
- TI-2018-03710 Memory corruption in Mozilla Firefox ESRPriority MEDIUM 47
- TI-2018-03695 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 43
- Advisory ·
Mozilla Firefox, Firefox ESR, Thunderbird — RHSA-2018:0648
6 records Highest priority Priority MEDIUM 5 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2018-03693 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 49
- TI-2018-03710 Memory corruption in Mozilla Firefox ESRPriority MEDIUM 47
- TI-2018-03695 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 43
Show 3 more groups
- Advisory ·
Mozilla Firefox, Firefox ESR, Thunderbird — USN-3545-1
6 records Highest priority Priority MEDIUM 5 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2018-03693 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 49
- TI-2018-03710 Memory corruption in Mozilla Firefox ESRPriority MEDIUM 47
- TI-2018-03695 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 43
- Advisory ·
Mozilla Firefox, Firefox ESR, Thunderbird — DSA-4155
6 records Highest priority Priority MEDIUM 5 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2018-03693 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 49
- TI-2018-03710 Memory corruption in Mozilla Firefox ESRPriority MEDIUM 47
- TI-2018-03695 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 43
- Advisory ·
Mozilla Firefox, Firefox ESR — DSA-4143
2 records Highest priority Priority MEDIUM 2 MEDIUM
Other records, highest priority first
- TI-2018-03712 Out-of-bounds write in Mozilla Firefox ESRPriority MEDIUM 47
Vendor assessments
Red Hat
Red Hat rating: Critical. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2018:0549, RHSA-2018:0648, RHSA-2018:1058 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2018:0549, RHSA-2018:1058 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2018:1058 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2018:1058 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2018:0549, RHSA-2018:0647, RHSA-2018:0649 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2018:0549, RHSA-2018:0649 |
| Red Hat Enterprise Linux HPC Node (v. 6) | Fixed | RHSA-2018:0649 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2018:0549, RHSA-2018:0649 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2018:0549, RHSA-2018:0649 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2018:0549, RHSA-2018:1058 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2018:0549, RHSA-2018:0647, RHSA-2018:0649 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2018:0549, RHSA-2018:0648, RHSA-2018:1058 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2018:0549, RHSA-2018:0647, RHSA-2018:0649 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2018:0549, RHSA-2018:0648, RHSA-2018:1058 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2018:0549, RHSA-2018:0649 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2018:0549, RHSA-2018:1058 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) | Fixed | RHSA-2018:0549 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) | Fixed | RHSA-2018:0648 |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2018-5146
- 2026-10-03 Alias added: GHSA-qxgw-7whg-72j2
References
Advisory 18
- RHSA-2018:0549
- USN-3604-1
- DSA-4143
- GLSA-201811-13
- [debian-lts-announce] 20180326 [SECURITY] [DLA 1319-1] firefox-esr security update
- USN-3545-1
- USN-3599-1
- https://www.mozilla.org/security/advisories/mfsa2018-09/
- [debian-lts-announce] 20180329 [SECURITY] [DLA 1327-1] thunderbird security update
- DSA-4155
- https://www.mozilla.org/security/advisories/mfsa2018-08/
- RHSA-2018:0648
- RHSA-2018:0647
- RHSA-2018:1058
- https://bugzilla.mozilla.org/show_bug.cgi?id=1446062
- DSA-4140
- [debian-lts-announce] 20180430 [SECURITY] [DLA 1368-1] libvorbis security update
- RHSA-2018:0649
More Mozilla Firefox vulnerabilities
- TI-2024-08981 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.8
- TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
- TI-2019-08769 Improper input validation in Mozilla Firefox ESR KEVCVSS 3.1CRITICAL 10.0
- TI-2010-03577 Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before… KEVCVSS 3.1CRITICAL 9.8
- TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
- TI-2023-04477 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
Sources
- CVE-2018-5146 · CVE Program
- CVE-2018-5146 · NVD
- FIRST EPSS
- GHSA-qxgw-7whg-72j2 · GitHub Advisory Database · CC BY 4.0
- CVE-2018-5146 · Red Hat security data · CC BY 4.0
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