Vulnerability · Published Jun 2, 2023 · Assigned by mozilla
CVE-2023-29539
High 8.8
In plain English
A high-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 0.7% (higher than 55% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
When handling the filename directive in the Content-Disposition header, the filename would be truncated if the filename contained a NULL character. This could have led to reflected file download attacks potentially tricking users to install malware. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | firefox | 102.10.0-1.el8_7.alma | ALSA-2023:1787 |
| AlmaLinux:9 | firefox | 102.10.0-1.el9_1.alma | ALSA-2023:1786 |
| AlmaLinux:9 | firefox-x11 | 102.10.0-1.el9_1.alma | ALSA-2023:1786 |
| AlmaLinux:8 | thunderbird | 102.10.0-2.el8_7.alma | ALSA-2023:1802 |
| AlmaLinux:9 | thunderbird | 102.10.0-2.el9_1.alma | ALSA-2023:1809 |
| Alpine:v3.20 | firefox-esr | 102.10.0-r0 | ALPINE-CVE-2023-29539 |
| Alpine:v3.21 | firefox-esr | 102.10.0-r0 | ALPINE-CVE-2023-29539 |
| Alpine:v3.22 | firefox-esr | 102.10.0-r0 | ALPINE-CVE-2023-29539 |
| Alpine:v3.23 | firefox-esr | 102.10.0-r0 | ALPINE-CVE-2023-29539 |
| Debian:12 | firefox-esr | 102.10.0esr-1 | DEBIAN-CVE-2023-29539 |
| Debian:13 | firefox-esr | 102.10.0esr-1 | DEBIAN-CVE-2023-29539 |
| Debian:14 | firefox-esr | 102.10.0esr-1 | DEBIAN-CVE-2023-29539 |
| Debian:12 | thunderbird | 1:102.10.0-1 | DEBIAN-CVE-2023-29539 |
| Debian:13 | thunderbird | 1:102.10.0-1 | DEBIAN-CVE-2023-29539 |
| Debian:14 | thunderbird | 1:102.10.0-1 | DEBIAN-CVE-2023-29539 |
| Rocky Linux:8 | thunderbird | 0:102.10.0-2.el8_7 | RLSA-2023:1802 |
| Rocky Linux:9 | thunderbird | 0:102.10.0-2.el9_1 | RLSA-2023:1809 |
| Ubuntu:22.04:LTS | mozjs78 | no fix listed | UBUNTU-CVE-2023-29539 |
| Ubuntu:22.04:LTS | mozjs91 | no fix listed | UBUNTU-CVE-2023-29539 |
| Ubuntu:22.04:LTS | thunderbird | 1:102.10.0+build2-0ubuntu0.22.04.1 | UBUNTU-CVE-2023-29539 |
| Ubuntu:22.04:LTS | thunderbird | 1:102.10.0+build2-0ubuntu0.22.04.1 | USN-6015-1 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | unspecified – before 112 |
| Mozilla | Focus for Android | unspecified – before 112 |
| Mozilla | Firefox ESR | unspecified – before 102.10 |
| Mozilla | Firefox for Android | unspecified – before 112 |
| Mozilla | Thunderbird | unspecified – before 102.10 |