Race conditions in reference counting code were found through code inspection.
Race conditions in reference counting code were found through code inspection. These could have resulted in potentially exploitable use-after-free vulnerabilities. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.
- BDU:2023-04325
- ALSA-2023:4462
- ALSA-2023:4468
- ALSA-2023:4497
- ALSA-2023:4499
- DLA-3521-1
- DLA-3523-1
- DSA-5464-1
- DSA-5469-1
- openSUSE-SU-2024:13091-1
- openSUSE-SU-2024:13124-1
- RHSA-2023:4460
- RHSA-2023:4461
- RHSA-2023:4462
- RHSA-2023:4463
- RHSA-2023:4464
- RHSA-2023:4465
- RHSA-2023:4468
- RHSA-2023:4469
- RHSA-2023:4492
- Published
- Aug 1, 2023
- Updated
- Jun 17, 2026
- EPSS
- 0.6% · 48th percentile
- CWE
- CWE-362
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Report tools
Action score
23
Monitor
Low priority for now.
- CVSS
- 23 / 40 · 5.9 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.6%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| mozilla | firefox | cpe:2.3:a:mozilla:firefox |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux11.0
- debian debian linux12.0
- mozilla firefoxbefore 116.0
- mozilla firefox102.0 and later · before 102.14
- mozilla firefox115.0 and later · before 115.1
Versions reported by the vendor
Affected version ranges reported by the assigning authority (mozilla). Independent of NVD's CPE analysis and usually ahead of it.
Mozilla Firefox
- unspecified and later · before 116affected
Mozilla Firefox ESR
- unspecified and later · before 102.14affected
- unspecified and later · before 115.1affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | firefox | before 102.14.0-1.el8_8.alma | 102.14.0-1.el8_8.alma |
| AlmaLinux:8 | thunderbird | before 102.14.0-1.el8_8.alma | 102.14.0-1.el8_8.alma |
| AlmaLinux:9 | firefox | before 102.14.0-1.el9_2.alma | 102.14.0-1.el9_2.alma |
| AlmaLinux:9 | firefox-x11 | before 102.14.0-1.el9_2.alma | 102.14.0-1.el9_2.alma |
| AlmaLinux:9 | thunderbird | before 102.14.0-1.el9_2.alma | 102.14.0-1.el9_2.alma |
| Debian:10 | firefox-esr | before 102.14.0esr-1~deb10u1 | 102.14.0esr-1~deb10u1 |
| Debian:10 | thunderbird | before 1:102.14.0-1~deb10u1 | 1:102.14.0-1~deb10u1 |
| Debian:11 | firefox-esr | before 102.14.0esr-1~deb11u1 | 102.14.0esr-1~deb11u1 |
| Debian:11 | thunderbird | before 1:102.14.0-1~deb11u1 | 1:102.14.0-1~deb11u1 |
| Debian:12 | firefox-esr | before 102.14.0esr-1~deb12u1 | 102.14.0esr-1~deb12u1 |
| Debian:12 | thunderbird | before 1:102.14.0-1~deb12u1 | 1:102.14.0-1~deb12u1 |
| Debian:13 | firefox-esr | before 115.1.0esr-1 | 115.1.0esr-1 |
| Debian:13 | thunderbird | before 1:115.1.0-1 | 1:115.1.0-1 |
| openSUSE:Tumbleweed | MozillaFirefox | before 116.0.2-1.1 | 116.0.2-1.1 |
| openSUSE:Tumbleweed | MozillaThunderbird | before 102.14.0-1.1 | 102.14.0-1.1 |
| Red Hat:enterprise_linux:7::client | firefox | before 0:102.14.0-1.el7_9 | 0:102.14.0-1.el7_9 |
| Red Hat:enterprise_linux:7::client | firefox-debuginfo | before 0:102.14.0-1.el7_9 | 0:102.14.0-1.el7_9 |
| Red Hat:enterprise_linux:7::client | thunderbird | before 0:102.14.0-1.el7_9 | 0:102.14.0-1.el7_9 |
| Red Hat:enterprise_linux:7::client | thunderbird-debuginfo | before 0:102.14.0-1.el7_9 | 0:102.14.0-1.el7_9 |
| Red Hat:enterprise_linux:8::appstream | firefox | before 0:102.14.0-1.el8_8 | 0:102.14.0-1.el8_8 |
| Red Hat:enterprise_linux:8::appstream | firefox-debuginfo | before 0:102.14.0-1.el8_8 | 0:102.14.0-1.el8_8 |
| Red Hat:enterprise_linux:8::appstream | firefox-debugsource | before 0:102.14.0-1.el8_8 | 0:102.14.0-1.el8_8 |
| Red Hat:enterprise_linux:8::appstream | thunderbird | before 0:102.14.0-1.el8_8 | 0:102.14.0-1.el8_8 |
| Red Hat:enterprise_linux:8::appstream | thunderbird-debuginfo | before 0:102.14.0-1.el8_8 | 0:102.14.0-1.el8_8 |
+48
Same product
mozilla: all recordsOther highest-scoring records for the same primary product.
- CVE-2010-3765Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before 3.1.6 and 3.0.x before 3.0.10, and SeaMonkey 2.x befKEV94Now
- CVE-2019-11708Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxeKEV87Now
- CVE-2015-4495The PDF reader in Mozilla Firefox before 39.0.3, Firefox ESR 38.x before 38.1.1, and Firefox OS before 2.2 allows remote attackers to bypassKEV86Now
- CVE-2013-1690Mozilla Firefox before 22.0, Firefox ESR 17.x before 17.0.7, Thunderbird before 17.0.7, and Thunderbird ESR 17.x before 17.0.7 do not properKEV86Now
- CVE-2019-17026Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type confusion.KEV79This week
- CVE-2024-9680An attacker was able to achieve code execution in the content process by exploiting a use-after-free in Animation timelines.KEV76This week
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| almalinux:firefox | 102.14.0-1.el9_2.alma · AlmaLinux:9 | Package registry (OSV) |
| almalinux:firefox-x11 | 102.14.0-1.el9_2.alma · AlmaLinux:9 | Package registry (OSV) |
| almalinux:thunderbird | 102.14.0-1.el8_8.alma · AlmaLinux:8 | Package registry (OSV) |
| debian:firefox-esr | 102.14.0esr-1~deb12u1 · Debian:12 | Package registry (OSV) |
| debian:thunderbird | 1:102.14.0-1~deb12u1 · Debian:12 | Package registry (OSV) |
| opensuse:MozillaFirefox | 115.1.0-150200.152.99.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:MozillaThunderbird | 115.1.0-150200.8.127.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| red hat:firefox | 0:102.14.0-1.el8_2 · Red Hat:rhel_aus:8.2::appstream | Package registry (OSV) |
| red hat:firefox-debuginfo | 0:102.14.0-1.el8_2 · Red Hat:rhel_aus:8.2::appstream | Package registry (OSV) |
| red hat:firefox-debugsource | 0:102.14.0-1.el8_2 · Red Hat:rhel_aus:8.2::appstream | Package registry (OSV) |
| red hat:firefox-x11 | 0:102.14.0-1.el9_2 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:thunderbird | 0:102.14.0-1.el8_1 · Red Hat:rhel_e4s:8.1::appstream | Package registry (OSV) |
| red hat:thunderbird-debuginfo | 0:102.14.0-1.el8_1 · Red Hat:rhel_e4s:8.1::appstream | Package registry (OSV) |
| red hat:thunderbird-debugsource | 0:102.14.0-1.el8_1 · Red Hat:rhel_e4s:8.1::appstream | Package registry (OSV) |
| rocky linux:firefox | 0:102.14.0-1.el9_2 · Rocky Linux:9 | Package registry (OSV) |
| rocky linux:thunderbird | 0:102.14.0-1.el8_8 · Rocky Linux:8 | Package registry (OSV) |
| suse:MozillaFirefox | 115.1.0-112.173.1 · SUSE:Linux Enterprise Software Development Kit 12 SP5 | Package registry (OSV) |
| suse:MozillaFirefox | 115.1.0-150200.152.99.1 · SUSE:Linux Enterprise Module for Desktop Applications 15 SP4 | Package registry (OSV) |
| suse:MozillaThunderbird | 115.1.0-150200.8.127.1 · SUSE:Linux Enterprise Module for Package Hub 15 SP4 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- bugzilla.mozilla.org/show_bug.cgi?id=1842658
- lists.debian.org/debian-lts-announce/2023/08/msg00008.html
- lists.debian.org/debian-lts-announce/2023/08/msg00010.html
- www.debian.org/security/2023/dsa-5464
- www.debian.org/security/2023/dsa-5469
- www.mozilla.org/security/advisories/mfsa2023-29/
- www.mozilla.org/security/advisories/mfsa2023-30/
- www.mozilla.org/security/advisories/mfsa2023-31/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.