CVE-2023-5174
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.00%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.00% probability · 61th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- mozilla/firefox · mozilla/firefox esr · mozilla/thunderbird
- Source
- security@mozilla.org
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.