CVE-2023-29532

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.

• https://bugzilla.mozilla.org/show_bug.cgi?id=1806394Permissions Required
• https://www.mozilla.org/security/advisories/mfsa2023-13/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-14/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-15/Vendor Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1806394Permissions Required
• https://www.mozilla.org/security/advisories/mfsa2023-13/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-14/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-15/Vendor Advisory

Published

Jun 19, 2023

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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