Out-of-bounds write in Mozilla Firefox
Priority MEDIUM 41CWE-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: 17 fixed, 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.
Summary
Memory safety bugs present in Firefox 114, Firefox ESR 102.12, and Thunderbird 102.12. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 115, Firefox ESR < 102.13, and Thunderbird < 102.13.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00753 55th percentileScored 2026-11-07
Fix Partial Firefox (Mozilla): 115Firefox ESR (Mozilla): 102.13+1 more productRed Hat: 16 advisoriesRed Hat: 17 fixed, 1 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Mozilla | Firefox | before 115 | 115 | Patch available | CNA |
| Mozilla | Firefox ESR | before 102.13 | 102.13 | Patch available | CNA |
| Mozilla | Thunderbird | before 102.13 | 102.13 | Patch available | CNA |
- Firefox VendorMozilla Affected before 115 Fixed in 115 Patch available CNA
- Firefox ESR VendorMozilla Affected before 102.13 Fixed in 102.13 Patch available CNA
- Thunderbird VendorMozilla Affected before 102.13 Fixed in 102.13 Patch available CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | before 115.0 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* | before 102.13 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* | before 102.13 | Vulnerable | Mozilla |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | 11.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:* | 12.0 | Vulnerable | Debian |
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 115.0 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 102.13 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 102.13 Vulnerable ·Mozilla
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:* Versions 12.0 Vulnerable ·Debian
Remediation
- Fix · CNA Firefox (Mozilla) Fixed in 115
- Fix · CNA Firefox ESR (Mozilla) Fixed in 102.13
- Fix · CNA Thunderbird (Mozilla) Fixed in 102.13
Red Hat 16 advisories
- RHSA-2023:4079 Released 2023-07-13 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux Client (v. 7) firefox-102.13.0-2.el7_9
- Red Hat Enterprise Linux Client Optional (v. 7) firefox-102.13.0-2.el7_9
- Red Hat Enterprise Linux Server (v. 7) firefox-102.13.0-2.el7_9
- Red Hat Enterprise Linux Server Optional (v. 7) firefox-102.13.0-2.el7_9
- Red Hat Enterprise Linux Workstation (v. 7) firefox-102.13.0-2.el7_9
- Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-102.13.0-2.el7_9
- RHSA-2023:4076 Released 2023-07-13 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream (v. 8) firefox-102.13.0-2.el8_8
- RHSA-2023:4075 Released 2023-07-13 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream AUS (v.8.4) firefox-102.13.0-2.el8_4
- Red Hat Enterprise Linux AppStream E4S (v.8.4) firefox-102.13.0-2.el8_4
- Red Hat Enterprise Linux AppStream TUS (v.8.4) firefox-102.13.0-2.el8_4
Show 13 more Red Hat advisories
- RHSA-2023:4074 Released 2023-07-13 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream AUS (v.8.4) thunderbird-102.13.0-2.el8_4
- Red Hat Enterprise Linux AppStream E4S (v.8.4) thunderbird-102.13.0-2.el8_4
- Red Hat Enterprise Linux AppStream TUS (v.8.4) thunderbird-102.13.0-2.el8_4
- RHSA-2023:4066 Released 2023-07-13 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream EUS (v.9.0) thunderbird-102.13.0-2.el9_0
- RHSA-2023:4073 Released 2023-07-13 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream EUS (v.9.0) firefox-102.13.0-2.el9_0
- RHSA-2023:4072 Released 2023-07-13 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream E4S (v. 8.1) firefox-102.13.0-2.el8_1
- RHSA-2023:4071 Released 2023-07-13 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream (v. 9) firefox-102.13.0-2.el9_2, firefox-x11-102.13.0-2.el9_2
- RHSA-2023:4069 Released 2023-07-13 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream EUS (v.8.6) firefox-102.13.0-2.el8_6
- RHSA-2023:4067 Released 2023-07-13 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream EUS (v.8.6) thunderbird-102.13.0-2.el8_6
- RHSA-2023:4065 Released 2023-07-13 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream E4S (v. 8.1) thunderbird-102.13.0-2.el8_1
- RHSA-2023:4068 Released 2023-07-13 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream AUS (v. 8.2) thunderbird-102.13.0-2.el8_2
- Red Hat Enterprise Linux AppStream E4S (v. 8.2) thunderbird-102.13.0-2.el8_2
- Red Hat Enterprise Linux AppStream TUS (v. 8.2) thunderbird-102.13.0-2.el8_2
- RHSA-2023:4063 Released 2023-07-13 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream (v. 8) thunderbird-102.13.0-2.el8_8
- RHSA-2023:4070 Released 2023-07-13 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox-102.13.0-2.el8_2
- Red Hat Enterprise Linux AppStream E4S (v. 8.2) firefox-102.13.0-2.el8_2
- Red Hat Enterprise Linux AppStream TUS (v. 8.2) firefox-102.13.0-2.el8_2
- RHSA-2023:4062 Released 2023-07-13 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux Client (v. 7) thunderbird-102.13.0-2.el7_9
- Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-102.13.0-2.el7_9
- Red Hat Enterprise Linux Workstation (v. 7) thunderbird-102.13.0-2.el7_9
- RHSA-2023:4064 Released 2023-07-13 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream (v. 9) thunderbird-102.13.0-2.el9_2
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Mozilla Firefox 115
13 records Highest priority Priority HIGH 2 HIGH, 3 MEDIUM, 8 LOW
Other records, highest priority first
- TI-2023-18834 Use after free in Mozilla FirefoxPriority HIGH 73
- TI-2023-18841 Unrestricted file upload in Mozilla FirefoxPriority HIGH 69
- TI-2023-18840 A website could have obscured the fullscreen notification by using a URL with a scheme…Priority MEDIUM 62
- Release ·
Mozilla Firefox ESR, Thunderbird 102.13
5 records Highest priority Priority HIGH 2 HIGH, 3 MEDIUM
Other records, highest priority first
- TI-2023-18834 Use after free in Mozilla FirefoxPriority HIGH 73
- TI-2023-18841 Unrestricted file upload in Mozilla FirefoxPriority HIGH 69
- TI-2023-18840 A website could have obscured the fullscreen notification by using a URL with a scheme…Priority MEDIUM 62
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2023:4063, RHSA-2023:4076 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2023:4064, RHSA-2023:4071 |
| Red Hat Enterprise Linux AppStream AUS (v. 8.2) | Fixed | RHSA-2023:4068, RHSA-2023:4070 |
| Red Hat Enterprise Linux AppStream AUS (v.8.4) | Fixed | RHSA-2023:4074, RHSA-2023:4075 |
| Red Hat Enterprise Linux AppStream E4S (v. 8.1) | Fixed | RHSA-2023:4065, RHSA-2023:4072 |
| Red Hat Enterprise Linux AppStream E4S (v. 8.2) | Fixed | RHSA-2023:4068, RHSA-2023:4070 |
| Red Hat Enterprise Linux AppStream E4S (v.8.4) | Fixed | RHSA-2023:4074, RHSA-2023:4075 |
| Red Hat Enterprise Linux AppStream EUS (v.8.6) | Fixed | RHSA-2023:4067, RHSA-2023:4069 |
| Red Hat Enterprise Linux AppStream EUS (v.9.0) | Fixed | RHSA-2023:4066, RHSA-2023:4073 |
| Red Hat Enterprise Linux AppStream TUS (v. 8.2) | Fixed | RHSA-2023:4068, RHSA-2023:4070 |
| Red Hat Enterprise Linux AppStream TUS (v.8.4) | Fixed | RHSA-2023:4074, RHSA-2023:4075 |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2023:4062, RHSA-2023:4079 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2023:4079 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2023:4079 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2023:4062, RHSA-2023:4079 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2023:4062, RHSA-2023:4079 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2023:4079 |
Timeline
- 2026-10-02 Threatist record created from CVE-2023-37211
- 2026-10-03 Alias added: GHSA-xjqq-3xrg-fh6j
References
Advisory 6
- https://www.mozilla.org/security/advisories/mfsa2023-22/
- https://www.mozilla.org/security/advisories/mfsa2023-23/
- https://www.mozilla.org/security/advisories/mfsa2023-24/
- https://lists.debian.org/debian-lts-announce/2023/07/msg00006.html
- https://www.debian.org/security/2023/dsa-5450
- https://www.debian.org/security/2023/dsa-5451
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-2023-37211 · CVE Program
- CVE-2023-37211 · NVD
- FIRST EPSS
- GHSA-xjqq-3xrg-fh6j · GitHub Advisory Database · CC BY 4.0
- CVE-2023-37211 · 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