Memory corruption in Mozilla Thunderbird
Priority MEDIUM 49CWE-119Published · 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
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.
Summary
A buffer overflow can occur when manipulating the SVG "animatedPathSegList" through script. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.7, Firefox ESR < 52.7, and Firefox < 59.
Why it matters now
EPSS 0.07832 94th percentileScored 2026-11-07
Fix Fixed Thunderbird (Mozilla): 52.7Firefox ESR (Mozilla): 52.7+1 more productRed Hat: 4 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 52.7 | 52.7 | Patch available | CNA |
| Mozilla | Firefox ESR | before 52.7 | 52.7 | Patch available | CNA |
| Mozilla | Firefox | before 59 | 59 | Patch available | CNA |
- Thunderbird VendorMozilla Affected before 52.7 Fixed in 52.7 Patch available CNA
- Firefox ESR VendorMozilla Affected before 52.7 Fixed in 52.7 Patch available CNA
- Firefox VendorMozilla Affected before 59 Fixed in 59 Patch available CNA
CPE configurations NVD · 17
| 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_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_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: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
- 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
Show 7 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| 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 52.7.0; before 59.0 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* | before 52.7.0 | Vulnerable | Mozilla |
- 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 52.7.0; before 59.0 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 52.7.0 Vulnerable ·Mozilla
Remediation
- Fix · CNA Thunderbird (Mozilla) Fixed in 52.7
- Fix · CNA Firefox ESR (Mozilla) Fixed in 52.7
- Fix · CNA Firefox (Mozilla) Fixed in 59
Red Hat 4 advisories
- 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
- RHSA-2018:0527 Released 2018-03-15 · Red Hat rating Criticalfirefox security update
- Red Hat Enterprise Linux Client (v. 7) firefox-52.7.0-1.el7_4
- Red Hat Enterprise Linux Client Optional (v. 7) firefox-52.7.0-1.el7_4
- Red Hat Enterprise Linux Server (v. 7) firefox-52.7.0-1.el7_4
- Red Hat Enterprise Linux Server Optional (v. 7) firefox-52.7.0-1.el7_4, firefox-52.7.0-1.el7_4.ppc
- Red Hat Enterprise Linux Workstation (v. 7) firefox-52.7.0-1.el7_4
- Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-52.7.0-1.el7_4
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) firefox-52.7.0-1.el7_4
Show 1 more Red Hat advisories
- RHSA-2018:0526 Released 2018-03-15 · Red Hat rating Criticalfirefox security update
- Red Hat Enterprise Linux Desktop (v. 6) firefox-52.7.0-1.el6_9
- Red Hat Enterprise Linux Desktop Optional (v. 6) firefox-52.7.0-1.el6_9
- Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox-52.7.0-1.el6_9
- Red Hat Enterprise Linux Server (v. 6) firefox-52.7.0-1.el6_9
- Red Hat Enterprise Linux Server Optional (v. 6) firefox-52.7.0-1.el6_9, firefox-52.7.0-1.el6_9.ppc
- Red Hat Enterprise Linux Workstation (v. 6) firefox-52.7.0-1.el6_9
- Red Hat Enterprise Linux Workstation Optional (v. 6) firefox-52.7.0-1.el6_9
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-3596-1
17 records Highest priority Priority MEDIUM 6 MEDIUM, 11 LOW
Other records, highest priority first
- TI-2018-03694 Use after free in Mozilla FirefoxPriority MEDIUM 46
- TI-2018-03692 Memory corruption in Mozilla FirefoxPriority MEDIUM 46
- TI-2018-03696 Improper input validation in Mozilla Firefox ESRPriority MEDIUM 43
- Advisory ·
Mozilla Firefox, Firefox ESR, Thunderbird — RHSA-2018:0526
7 records Highest priority Priority MEDIUM 5 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2018-03710 Memory corruption in Mozilla Firefox ESRPriority MEDIUM 47
- TI-2018-03696 Improper input validation in Mozilla Firefox ESRPriority MEDIUM 43
- TI-2018-03695 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 43
Show 6 more groups
- Advisory ·
Mozilla Firefox, Firefox ESR, Thunderbird — RHSA-2018:0527
7 records Highest priority Priority MEDIUM 5 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2018-03710 Memory corruption in Mozilla Firefox ESRPriority MEDIUM 47
- TI-2018-03696 Improper input validation in Mozilla Firefox ESRPriority MEDIUM 43
- TI-2018-03695 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 43
- Advisory ·
Mozilla Firefox, Firefox ESR, Thunderbird — DSA-4139
7 records Highest priority Priority MEDIUM 5 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2018-03710 Memory corruption in Mozilla Firefox ESRPriority MEDIUM 47
- TI-2018-03696 Improper input validation in Mozilla Firefox ESRPriority MEDIUM 43
- TI-2018-03695 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 43
- 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-2018-03711 Out-of-bounds write in Mozilla FirefoxPriority MEDIUM 52
- 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-2018-03711 Out-of-bounds write in Mozilla FirefoxPriority MEDIUM 52
- 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 — USN-3545-1
6 records Highest priority Priority MEDIUM 5 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2018-03711 Out-of-bounds write in Mozilla FirefoxPriority MEDIUM 52
- 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-2018-03711 Out-of-bounds write in Mozilla FirefoxPriority MEDIUM 52
- TI-2018-03710 Memory corruption in Mozilla Firefox ESRPriority MEDIUM 47
- TI-2018-03695 Out-of-bounds write in Mozilla ThunderbirdPriority MEDIUM 43
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-2018:0527, RHSA-2018:0648 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2018:0527 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2018:0526, RHSA-2018:0647 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2018:0526 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2018:0526 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2018:0526 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2018:0527 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2018:0526, RHSA-2018:0647 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2018:0527, RHSA-2018:0648 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2018:0526, RHSA-2018:0647 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2018:0527, RHSA-2018:0648 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2018:0526 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2018:0527 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) | Fixed | RHSA-2018:0527 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) | Fixed | RHSA-2018:0648 |
Timeline
- 2026-10-02 Threatist record created from CVE-2018-5127
- 2026-10-03 Alias added: GHSA-669j-hvf3-2f28
References
Advisory 15
- DSA-4139
- GLSA-201810-01
- GLSA-201811-13
- RHSA-2018:0527
- USN-3545-1
- [debian-lts-announce] 20180315 [SECURITY] [DLA 1308-1] firefox-esr security update
- https://www.mozilla.org/security/advisories/mfsa2018-09/
- https://www.mozilla.org/security/advisories/mfsa2018-07/
- RHSA-2018:0526
- [debian-lts-announce] 20180329 [SECURITY] [DLA 1327-1] thunderbird security update
- DSA-4155
- RHSA-2018:0648
- RHSA-2018:0647
- USN-3596-1
- https://www.mozilla.org/security/advisories/mfsa2018-06/
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-2018-5127 · CVE Program
- CVE-2018-5127 · NVD
- FIRST EPSS
- GHSA-669j-hvf3-2f28 · GitHub Advisory Database · CC BY 4.0
- CVE-2018-5127 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences