Memory safety bugs present in Firefox 111 and Firefox ESR 102.9.
Priority MEDIUM 41Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 15 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.
Summary
Memory safety bugs present in Firefox 111 and Firefox ESR 102.9. 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 < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00708 53rd percentileScored 2026-11-07
Fix Partial Firefox (Mozilla): 112Focus for Android (Mozilla): 112+3 more productsRed Hat: 16 advisoriesRed Hat: 15 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 112 | 112 | Patch available | CNA |
| Mozilla | Focus for Android | before 112 | 112 | Patch available | CNA |
| Mozilla | Firefox ESR | before 102.10 | 102.10 | Patch available | CNA |
| Mozilla | Firefox for Android | before 112 | 112 | Patch available | CNA |
| Mozilla | Thunderbird | before 102.10 | 102.10 | Patch available | CNA |
- Firefox VendorMozilla Affected before 112 Fixed in 112 Patch available CNA
- Focus for Android VendorMozilla Affected before 112 Fixed in 112 Patch available CNA
- Firefox ESR VendorMozilla Affected before 102.10 Fixed in 102.10 Patch available CNA
- Firefox for Android VendorMozilla Affected before 112 Fixed in 112 Patch available CNA
- Thunderbird VendorMozilla Affected before 102.10 Fixed in 102.10 Patch available CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | before 112.0 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* | before 102.10 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:firefox_mobile:*:*:*:*:*:android:*:* | before 112.0 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:focus:*:*:*:*:*:android:*:* | before 112.0 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* | before 102.10 | Vulnerable | Mozilla |
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 112.0 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 102.10 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:firefox_mobile:*:*:*:*:*:android:*:* Versions before 112.0 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:focus:*:*:*:*:*:android:*:* Versions before 112.0 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 102.10 Vulnerable ·Mozilla
Remediation
- Fix · CNA Firefox (Mozilla) Fixed in 112
- Fix · CNA Focus for Android (Mozilla) Fixed in 112
- Fix · CNA Firefox ESR (Mozilla) Fixed in 102.10
- Fix · CNA Firefox for Android (Mozilla) Fixed in 112
- Fix · CNA Thunderbird (Mozilla) Fixed in 102.10
Red Hat 16 advisories
- RHSA-2023:1806 Released 2023-04-17 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux Client (v. 7) thunderbird-102.10.0-2.el7_9
- Red Hat Enterprise Linux Server Optional (v. 7) thunderbird-102.10.0-2.el7_9
- Red Hat Enterprise Linux Workstation (v. 7) thunderbird-102.10.0-2.el7_9
- RHSA-2023:1810 Released 2023-04-17 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream EUS (v.9.0) thunderbird-102.10.0-2.el9_0
- RHSA-2023:1811 Released 2023-04-17 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream EUS (v.8.6) thunderbird-102.10.0-2.el8_6
Show 13 more Red Hat advisories
- RHSA-2023:1809 Released 2023-04-17 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream (v. 9) thunderbird-102.10.0-2.el9_1
- RHSA-2023:1804 Released 2023-04-17 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream EUS (v.8.4) thunderbird-102.10.0-2.el8_4
- RHSA-2023:1805 Released 2023-04-17 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream AUS (v. 8.2) thunderbird-102.10.0-2.el8_2
- Red Hat Enterprise Linux AppStream E4S (v. 8.2) thunderbird-102.10.0-2.el8_2
- Red Hat Enterprise Linux AppStream TUS (v. 8.2) thunderbird-102.10.0-2.el8_2
- RHSA-2023:1802 Released 2023-04-17 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream (v. 8) thunderbird-102.10.0-2.el8_7
- RHSA-2023:1803 Released 2023-04-17 · Red Hat rating Importantthunderbird security update
- Red Hat Enterprise Linux AppStream E4S (v. 8.1) thunderbird-102.10.0-2.el8_1
- RHSA-2023:1791 Released 2023-04-14 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux Client (v. 7) firefox-102.10.0-1.el7_9
- Red Hat Enterprise Linux Client Optional (v. 7) firefox-102.10.0-1.el7_9
- Red Hat Enterprise Linux Server (v. 7) firefox-102.10.0-1.el7_9
- Red Hat Enterprise Linux Server Optional (v. 7) firefox-102.10.0-1.el7_9
- Red Hat Enterprise Linux Workstation (v. 7) firefox-102.10.0-1.el7_9
- Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-102.10.0-1.el7_9
- RHSA-2023:1790 Released 2023-04-14 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream EUS (v.8.4) firefox-102.10.0-1.el8_4
- RHSA-2023:1788 Released 2023-04-14 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream EUS (v.8.6) firefox-102.10.0-1.el8_6
- RHSA-2023:1792 Released 2023-04-14 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream E4S (v. 8.1) firefox-102.10.0-1.el8_1
- RHSA-2023:1787 Released 2023-04-14 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream (v. 8) firefox-102.10.0-1.el8_7
- RHSA-2023:1789 Released 2023-04-14 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream AUS (v. 8.2) firefox-102.10.0-1.el8_2
- Red Hat Enterprise Linux AppStream E4S (v. 8.2) firefox-102.10.0-1.el8_2
- Red Hat Enterprise Linux AppStream TUS (v. 8.2) firefox-102.10.0-1.el8_2
- RHSA-2023:1786 Released 2023-04-14 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream (v. 9) firefox-102.10.0-1.el9_1, firefox-x11-102.10.0-1.el9_1
- RHSA-2023:1785 Released 2023-04-14 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream EUS (v.9.0) firefox-102.10.0-1.el9_0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Mozilla Firefox, Firefox for Android, Focus for Android 112
15 records Highest priority Priority HIGH 1 HIGH, 8 MEDIUM, 6 LOW
Other records, highest priority first
- TI-2023-13905 Race condition in Mozilla Firefox for AndroidPriority HIGH 68
- TI-2023-13916 A wrong lowering instruction in the ARM64 Ion compiler resulted in a wrong optimization…Priority MEDIUM 62
- TI-2023-13903 Following a Garbage Collector compaction, weak maps may have been accessed before they…Priority MEDIUM 62
- Release ·
Mozilla Thunderbird 102.10
9 records Highest priority Priority MEDIUM 6 MEDIUM, 3 LOW
Other records, highest priority first
- TI-2023-13916 A wrong lowering instruction in the ARM64 Ion compiler resulted in a wrong optimization…Priority MEDIUM 62
- TI-2023-13903 Following a Garbage Collector compaction, weak maps may have been accessed before they…Priority MEDIUM 62
- TI-2023-13901 A website could have obscured the fullscreen notification by using a combination of…Priority MEDIUM 53
Show 1 more group
- Release ·
Mozilla Firefox ESR 102.10
8 records Highest priority Priority MEDIUM 6 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2023-13916 A wrong lowering instruction in the ARM64 Ion compiler resulted in a wrong optimization…Priority MEDIUM 62
- TI-2023-13903 Following a Garbage Collector compaction, weak maps may have been accessed before they…Priority MEDIUM 62
- TI-2023-13901 A website could have obscured the fullscreen notification by using a combination of…Priority MEDIUM 53
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-2023:1787, RHSA-2023:1802 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2023:1786, RHSA-2023:1809 |
| Red Hat Enterprise Linux AppStream AUS (v. 8.2) | Fixed | RHSA-2023:1789, RHSA-2023:1805 |
| Red Hat Enterprise Linux AppStream E4S (v. 8.1) | Fixed | RHSA-2023:1792, RHSA-2023:1803 |
| Red Hat Enterprise Linux AppStream E4S (v. 8.2) | Fixed | RHSA-2023:1789, RHSA-2023:1805 |
| Red Hat Enterprise Linux AppStream EUS (v.8.4) | Fixed | RHSA-2023:1790, RHSA-2023:1804 |
| Red Hat Enterprise Linux AppStream EUS (v.8.6) | Fixed | RHSA-2023:1788, RHSA-2023:1811 |
| Red Hat Enterprise Linux AppStream EUS (v.9.0) | Fixed | RHSA-2023:1785, RHSA-2023:1810 |
| Red Hat Enterprise Linux AppStream TUS (v. 8.2) | Fixed | RHSA-2023:1789, RHSA-2023:1805 |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2023:1791, RHSA-2023:1806 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2023:1791 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2023:1791 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2023:1791, RHSA-2023:1806 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2023:1791, RHSA-2023:1806 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2023:1791 |
Timeline
- 2026-10-02 Threatist record created from CVE-2023-29550
- 2026-10-03 Alias added: GHSA-r5hf-jqxq-23g7
References
Advisory 3
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-2023-29550 · CVE Program
- CVE-2023-29550 · NVD
- FIRST EPSS
- GHSA-r5hf-jqxq-23g7 · GitHub Advisory Database · CC BY 4.0
- CVE-2023-29550 · Red Hat security data · CC BY 4.0
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