CVE-2023-29542
CRITICAL severity · CVSS 9.8
9.8CVSS CRITICAL
Summary
A newline in a filename could have been used to bypass the file extension security mechanisms that replace malicious file extensions such as .lnk with .download. This could have led to accidental execution of malicious code. *This bug only affects Firefox and Thunderbird on Windows. Other versions of Firefox and Thunderbird are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)1%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (2)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://www.mozilla.org/security/advisories/mfsa2023-13/Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-14/Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-15/Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1810793
- https://bugzilla.mozilla.org/show_bug.cgi?id=1815062