Integer overflow in Mozilla Firefox ESR
Priority LOW 38CWE-190Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.
Summary
An integer overflow can occur during conversion of text to some Unicode character sets due to an unchecked length parameter. This vulnerability affects Firefox ESR < 52.7 and Thunderbird < 52.7.
Why it matters now
EPSS 0.03198 88th percentileScored 2026-11-07
Fix Fixed Firefox ESR (Mozilla): 52.7Thunderbird (Mozilla): 52.7Red 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 | Firefox ESR | before 52.7 | 52.7 | Patch available | CNA |
| Mozilla | Thunderbird | before 52.7 | 52.7 | Patch available | CNA |
- Firefox ESR VendorMozilla Affected before 52.7 Fixed in 52.7 Patch available CNA
- Thunderbird VendorMozilla Affected before 52.7 Fixed in 52.7 Patch available CNA
CPE configurations NVD · 18
| 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:7.2:*:*:*:*:*:*:* | 7.2 | 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: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:7.2:*:*:*:*:*:*:* Versions 7.2 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
Show 8 more CPE
| 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: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 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* | before 52.7.0 | Vulnerable | Mozilla |
- 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 52.7.0 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 52.7.0 Vulnerable ·Mozilla
Remediation
- Fix · CNA Firefox ESR (Mozilla) Fixed in 52.7
- Fix · CNA Thunderbird (Mozilla) Fixed in 52.7
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 ESR, Thunderbird — RHSA-2018:0526
7 records Highest priority Priority MEDIUM 5 MEDIUM, 2 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-2018-03696 Improper input validation in Mozilla Firefox ESRPriority MEDIUM 43
- Advisory ·
Mozilla Firefox ESR, Thunderbird — RHSA-2018:0527
7 records Highest priority Priority MEDIUM 5 MEDIUM, 2 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-2018-03696 Improper input validation in Mozilla Firefox ESRPriority MEDIUM 43
Show 5 more groups
- Advisory ·
Mozilla Firefox ESR, Thunderbird — DSA-4139
7 records Highest priority Priority MEDIUM 5 MEDIUM, 2 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-2018-03696 Improper input validation in Mozilla Firefox ESRPriority MEDIUM 43
- Advisory ·
Mozilla 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-2018-03693 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 49
- TI-2018-03710 Memory corruption in Mozilla Firefox ESRPriority MEDIUM 47
- Advisory ·
Mozilla 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-2018-03693 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 49
- TI-2018-03710 Memory corruption in Mozilla Firefox ESRPriority MEDIUM 47
- Advisory ·
Mozilla 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-2018-03693 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 49
- TI-2018-03710 Memory corruption in Mozilla Firefox ESRPriority MEDIUM 47
- Advisory ·
Mozilla 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-2018-03693 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 49
- TI-2018-03710 Memory corruption in Mozilla Firefox ESRPriority MEDIUM 47
Vendor assessments
Red Hat
Red Hat rating: Moderate. 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-2018-5144
- 2026-10-03 Alias added: GHSA-4xfj-vf8f-vwpp
References
Advisory 13
- 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
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-2018-5144 · CVE Program
- CVE-2018-5144 · NVD
- FIRST EPSS
- GHSA-4xfj-vf8f-vwpp · GitHub Advisory Database · CC BY 4.0
- CVE-2018-5144 · Red Hat security data · CC BY 4.0
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