Vulnerability Description
If Windows failed to duplicate a handle during process creation, the sandbox code may have inadvertently freed a pointer twice, resulting in a use-after-free and a potentially exploitable crash. *This bug only affects Firefox on Windows when run in non-standard configurations (such as using `runas`). Other operating systems are unaffected.* This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 118 |
| Mozilla | Firefox Esr | < 115.3 |
| Mozilla | Thunderbird | < 115.3 |
| Microsoft | Windows | - |
Related Weaknesses (CWE)
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1848454Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2023-41/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-42/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-43/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1848454Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2023-41/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-42/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-43/Vendor Advisory
FAQ
What is CVE-2023-5174?
CVE-2023-5174 is a vulnerability with a CVSS score of 9.8 (CRITICAL). If Windows failed to duplicate a handle during process creation, the sandbox code may have inadvertently freed a pointer twice, resulting in a use-after-free and a potentially exploitable crash. *This...
How severe is CVE-2023-5174?
CVE-2023-5174 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2023-5174?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Mozilla Firefox Esr, Mozilla Thunderbird, Microsoft Windows.