CVE-2023-29532
Summary
| CVE | CVE-2023-29532 |
|---|---|
| State | PUBLISHED |
| Assigner | mozilla |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2023-06-19 10:15:09 UTC |
| Updated | 2026-10-23 23:10:00 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v3.1 5.5 MEDIUM from [email protected]
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
EPSS: 0.001850000 probability, percentile 0.077170000 (date 2026-10-23)
Problem Types: NVD-CWE-noinfo | Mozilla Maintenance Service Write-lock bypass | CWE-noinfo Not enough information
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 5.5 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| 3.1 | ADP | DECLARED | 5.5 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| 3.1 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary | 5.5 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
HighAvailability
NoneCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Microsoft | Windows | - | All | All | All |
| Application | Mozilla | Firefox | All | All | All | All |
| Application | Mozilla | Firefox Esr | All | All | All | All |
| Application | Mozilla | Thunderbird | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Mozilla | Firefox | affected unspecified 112 custom | Not specified |
| CNA | Mozilla | Firefox ESR | affected unspecified 102.10 custom | Not specified |
| CNA | Mozilla | Thunderbird | affected unspecified 102.10 custom | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Security Vulnerabilities fixed in Firefox 112, Firefox for Android 112, Focus for Android 112 — Mozilla | af854a3a-2127-422b-91ae-364da2661108 | www.mozilla.org | Vendor Advisory |
| Security Vulnerabilities fixed in Firefox ESR 102.10 — Mozilla | af854a3a-2127-422b-91ae-364da2661108 | www.mozilla.org | Vendor Advisory |
| Access Denied | af854a3a-2127-422b-91ae-364da2661108 | bugzilla.mozilla.org | Permissions Required |
| Security Vulnerabilities fixed in Thunderbird 102.10 — Mozilla | af854a3a-2127-422b-91ae-364da2661108 | www.mozilla.org | Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Holger Fuhrmannek (en)
Legacy QID Mappings
- 378383 Mozilla Firefox Multiple Vulnerabilities (MFSA2023-13)
- 378384 Mozilla Firefox ESR Multiple Vulnerabilities (MFSA2023-14)
- 378387 Mozilla Thunderbird Multiple Vulnerabilities (MFSA2023-15)
- 503446 Alpine Linux Security Update for firefox-esr
- 506054 Alpine Linux Security Update for firefox-esr
- 753906 SUSE Enterprise Linux Security Update for MozillaFirefox (SUSE-SU-2023:1819-1)
- 753907 SUSE Enterprise Linux Security Update for MozillaFirefox (SUSE-SU-2023:1817-1)
- 753909 SUSE Enterprise Linux Security Update for MozillaFirefox (SUSE-SU-2023:1855-1)