CVE-2023-29532

Summary

A local attacker can trick the Mozilla Maintenance Service into applying an unsigned update file by pointing the service at an update file on a malicious SMB server. The update file can be replaced after the signature check, before the use, because the write-lock requested by the service does not work on a SMB server.

Note: This attack requires local system access and only affects Windows. Other operating systems are not affected. This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10.

Affected Software

VendorProductVersion RangeStatus
MozillaFirefoxunspecified < 112affected
MozillaFirefox ESRunspecified < 102.10affected
MozillaThunderbirdunspecified < 102.10affected

Weaknesses

  • Mozilla Maintenance Service Write-lock bypass

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References