Incorrect permission assignment in Mozilla Firefox
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
On Linux, if the secure computing mode BPF (seccomp-bpf) filter is running when the Gecko Media Plugin sandbox is started, the sandbox fails to be applied and items that would run within the sandbox are run protected only by the running filter which is typically weak compared to the sandbox. Note: this issue only affects Linux. Other operating systems are not affected. This vulnerability affects Firefox < 52 and Thunderbird < 52.
Why it matters now
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 | before 52 | 52 | Patch available | CNA |
| Mozilla | Thunderbird | before 52 | 52 | Patch available | CNA |
Remediation
- Fix · CNA Firefox (Mozilla) Fixed in 52
- Fix · CNA Thunderbird (Mozilla) Fixed in 52
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Mozilla Firefox 52
19 records Highest priority Priority MEDIUM 4 MEDIUM, 15 LOW
Other records, highest priority first
- TI-2017-03441 Memory corruption in Mozilla FirefoxPriority MEDIUM 46
- TI-2017-03427 Memory corruption in Mozilla FirefoxPriority MEDIUM 46
- TI-2017-03431 Use after free in Mozilla FirefoxPriority MEDIUM 45
- Release ·
Mozilla Thunderbird 52
14 records Highest priority Priority MEDIUM 4 MEDIUM, 10 LOW
Other records, highest priority first
- TI-2017-03441 Memory corruption in Mozilla FirefoxPriority MEDIUM 46
- TI-2017-03427 Memory corruption in Mozilla FirefoxPriority MEDIUM 46
- TI-2017-03431 Use after free in Mozilla FirefoxPriority MEDIUM 45
Timeline
- 2026-10-02 Threatist record created from CVE-2017-5426
- 2026-10-03 Alias added: GHSA-r4j3-22gw-qmpm
References
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-2017-5426 · CVE Program
- CVE-2017-5426 · NVD
- FIRST EPSS
- GHSA-r4j3-22gw-qmpm · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences