Vulnerability · Published Jun 19, 2023 · Assigned by mozilla
CVE-2023-29532
Medium 5.5
In plain English
A medium-severity security flaw in Firefox from Mozilla. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox-esr | 102.10.0-r0 | ALPINE-CVE-2023-29532 |
| Alpine:v3.21 | firefox-esr | 102.10.0-r0 | ALPINE-CVE-2023-29532 |
| Alpine:v3.22 | firefox-esr | 102.10.0-r0 | ALPINE-CVE-2023-29532 |
| Alpine:v3.23 | firefox-esr | 102.10.0-r0 | ALPINE-CVE-2023-29532 |
| Ubuntu:22.04:LTS | mozjs78 | no fix listed | UBUNTU-CVE-2023-29532 |
| Ubuntu:22.04:LTS | mozjs91 | no fix listed | UBUNTU-CVE-2023-29532 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | unspecified – before 112 |
| Mozilla | Firefox ESR | unspecified – before 102.10 |
| Mozilla | Thunderbird | unspecified – before 102.10 |