CVE-2023-29542

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.

Affected Software

Weaknesses

• Bypass of file download extension restrictions

ADP Enrichment

CVE Program Container

Additional References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1810793
• https://bugzilla.mozilla.org/show_bug.cgi?id=1815062
• https://www.mozilla.org/security/advisories/mfsa2023-13/
• https://www.mozilla.org/security/advisories/mfsa2023-14/
• https://www.mozilla.org/security/advisories/mfsa2023-15/

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: total

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1810793
• https://bugzilla.mozilla.org/show_bug.cgi?id=1815062
• https://www.mozilla.org/security/advisories/mfsa2023-13/
• https://www.mozilla.org/security/advisories/mfsa2023-14/
• https://www.mozilla.org/security/advisories/mfsa2023-15/

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