Use after free in Mozilla Thunderbird
Priority MEDIUM 52CWE-416Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.
Summary
A use-after-free vulnerability can occur when manipulating HTML media elements with media streams, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.6, Firefox ESR < 52.6, and Firefox < 58.
Why it matters now
EPSS 0.06926 94th percentileScored 2026-11-07
Fix Fixed Thunderbird (Mozilla): 52.6Firefox ESR (Mozilla): 52.6+1 more productRed Hat: 2 advisories
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 | Thunderbird | before 52.6 | 52.6 | Patch available | CNA |
| Mozilla | Firefox ESR | before 52.6 | 52.6 | Patch available | CNA |
| Mozilla | Firefox | before 58 | 58 | Patch available | CNA |
- Thunderbird VendorMozilla Affected before 52.6 Fixed in 52.6 Patch available CNA
- Firefox ESR VendorMozilla Affected before 52.6 Fixed in 52.6 Patch available CNA
- Firefox VendorMozilla Affected before 58 Fixed in 58 Patch available CNA
CPE configurations NVD · 17
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| 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: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_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: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: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_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
Show 7 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| 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:a:mozilla:firefox:*:*:*:*:*:*:*:* | before 58.0; before 52.6.0 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* | before 52.6.0 | Vulnerable | Mozilla |
| 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: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:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 58.0; before 52.6.0 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 52.6.0 Vulnerable ·Mozilla
- 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
Remediation
- Fix · CNA Thunderbird (Mozilla) Fixed in 52.6
- Fix · CNA Firefox ESR (Mozilla) Fixed in 52.6
- Fix · CNA Firefox (Mozilla) Fixed in 58
Red Hat 2 advisories
- RHSA-2018:0262 Released 2018-02-01 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux Client (v. 7) thunderbird-52.6.0-1.el7_4
- Red Hat Enterprise Linux Desktop (v. 6) thunderbird-52.6.0-1.el6_9
- Red Hat Enterprise Linux Server Optional (v. 6) thunderbird-52.6.0-1.el6_9
- Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-52.6.0-1.el7_4
- Red Hat Enterprise Linux Workstation (v. 6) thunderbird-52.6.0-1.el6_9
- Red Hat Enterprise Linux Workstation (v. 7) thunderbird-52.6.0-1.el7_4
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) thunderbird-52.6.0-1.el7_4
- RHSA-2018:0122 Released 2018-01-24 · Red Hat rating Criticalfirefox security update
- Red Hat Enterprise Linux Client (v. 7) firefox-52.6.0-1.el7_4
- Red Hat Enterprise Linux Client Optional (v. 7) firefox-52.6.0-1.el7_4
- Red Hat Enterprise Linux Desktop (v. 6) firefox-52.6.0-1.el6_9
- Red Hat Enterprise Linux Desktop Optional (v. 6) firefox-52.6.0-1.el6_9
- Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox-52.6.0-1.el6_9
- Red Hat Enterprise Linux Server (v. 6) firefox-52.6.0-1.el6_9
- Red Hat Enterprise Linux Server (v. 7) firefox-52.6.0-1.el7_4
- Red Hat Enterprise Linux Server Optional (v. 6) firefox-52.6.0-1.el6_9, firefox-52.6.0-1.el6_9.ppc
- Red Hat Enterprise Linux Server Optional (v. 7) firefox-52.6.0-1.el7_4, firefox-52.6.0-1.el7_4.ppc
- Red Hat Enterprise Linux Workstation (v. 6) firefox-52.6.0-1.el6_9
- Red Hat Enterprise Linux Workstation (v. 7) firefox-52.6.0-1.el7_4
- Red Hat Enterprise Linux Workstation Optional (v. 6) firefox-52.6.0-1.el6_9
- Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-52.6.0-1.el7_4
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) firefox-52.6.0-1.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 — USN-3544-1
30 records Highest priority Priority MEDIUM 16 MEDIUM, 14 LOW
Other records, highest priority first
- TI-2018-03671 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- TI-2018-03664 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- TI-2018-03660 Memory corruption in Mozilla FirefoxPriority MEDIUM 51
- Advisory ·
Mozilla Firefox, Firefox ESR, Thunderbird — RHSA-2018:0122
11 records Highest priority Priority MEDIUM 10 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2018-03671 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- TI-2018-03664 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- TI-2018-03662 Integer overflow in Mozilla ThunderbirdPriority MEDIUM 49
Show 3 more groups
- Advisory ·
Mozilla Firefox, Firefox ESR, Thunderbird — DSA-4096
11 records Highest priority Priority MEDIUM 10 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2018-03671 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- TI-2018-03664 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- TI-2018-03662 Integer overflow in Mozilla ThunderbirdPriority MEDIUM 49
- Advisory ·
Mozilla Firefox, Firefox ESR, Thunderbird — DSA-4102
11 records Highest priority Priority MEDIUM 10 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2018-03671 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- TI-2018-03664 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- TI-2018-03662 Integer overflow in Mozilla ThunderbirdPriority MEDIUM 49
- Advisory ·
Mozilla Firefox, Firefox ESR, Thunderbird — RHSA-2018:0262
10 records Highest priority Priority MEDIUM 9 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2018-03671 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- TI-2018-03664 Use after free in Mozilla ThunderbirdPriority MEDIUM 52
- TI-2018-03662 Integer overflow in Mozilla ThunderbirdPriority MEDIUM 49
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2018:0122, RHSA-2018:0262 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2018:0122 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2018:0122, RHSA-2018:0262 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2018:0122 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2018:0122 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2018:0122 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2018:0122 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2018:0122, RHSA-2018:0262 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2018:0122, RHSA-2018:0262 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2018:0122, RHSA-2018:0262 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2018:0122, RHSA-2018:0262 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2018:0122 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2018:0122 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) | Fixed | RHSA-2018:0122 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) | Fixed | RHSA-2018:0262 |
Timeline
- 2026-10-02 Threatist record created from CVE-2018-5102
- 2026-10-03 Alias added: GHSA-654q-p255-975q
References
Advisory 11
- https://www.mozilla.org/security/advisories/mfsa2018-03/
- [debian-lts-announce] 20180129 [SECURITY] [DLA 1262-1] thunderbird security update
- DSA-4096
- RHSA-2018:0262
- USN-3544-1
- https://www.mozilla.org/security/advisories/mfsa2018-04/
- RHSA-2018:0122
- https://www.mozilla.org/security/advisories/mfsa2018-02/
- [debian-lts-announce] 20180124 [SECURITY] [DLA 1256-1] firefox-esr security update
- DSA-4102
- https://bugzilla.mozilla.org/show_bug.cgi?id=1419363
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-2018-5102 · CVE Program
- CVE-2018-5102 · NVD
- FIRST EPSS
- GHSA-654q-p255-975q · GitHub Advisory Database · CC BY 4.0
- CVE-2018-5102 · Red Hat security data · CC BY 4.0
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