Vulnerability · Published Sep 11, 2023 · Assigned by mozilla
CVE-2023-4581XLL file extensions were downloadable without warnings
Medium 4.3
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 0.6% (higher than 48% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)4.3Medium
Exploit odds (30 days)0.6%top 52.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Excel `.xll` add-in files did not have a blocklist entry in Firefox's executable blocklist which allowed them to be downloaded without any warning of their potential harm. This vulnerability affects Firefox < 117, Firefox ESR < 102.15, Firefox ESR < 115.2, Thunderbird < 102.15, and Thunderbird < 115.2.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | firefox | 102.15.0-1.el8_8.alma | ALSA-2023:4952 |
| AlmaLinux:9 | firefox | 102.15.0-1.el9_2.alma | ALSA-2023:4958 |
| AlmaLinux:9 | firefox-x11 | 102.15.0-1.el9_2.alma | ALSA-2023:4958 |
| AlmaLinux:8 | thunderbird | 102.15.0-1.el8_8.alma | ALSA-2023:4954 |
| AlmaLinux:9 | thunderbird | 102.15.0-1.el9_2.alma | ALSA-2023:4955 |
| Alpine:v3.20 | firefox-esr | 115.2.0-r0 | ALPINE-CVE-2023-4581 |
| Alpine:v3.21 | firefox-esr | 115.2.0-r0 | ALPINE-CVE-2023-4581 |
| Alpine:v3.22 | firefox-esr | 115.2.0-r0 | ALPINE-CVE-2023-4581 |
| Alpine:v3.23 | firefox-esr | 115.2.0-r0 | ALPINE-CVE-2023-4581 |
| Debian:12 | firefox-esr | 102.15.0esr-1~deb12u1 | DEBIAN-CVE-2023-4581 |
| Debian:12 | firefox-esr | 102.15.0esr-1~deb12u1 | DSA-5485-1 |
| Debian:13 | firefox-esr | 115.2.0esr-1 | DEBIAN-CVE-2023-4581 |
| Debian:14 | firefox-esr | 115.2.0esr-1 | DEBIAN-CVE-2023-4581 |
| Debian:12 | thunderbird | 1:102.15.0-1~deb12u1 | DSA-5488-1 |
| Debian:12 | thunderbird | 1:102.15.0-1~deb12u1 | DEBIAN-CVE-2023-4581 |
| Debian:13 | thunderbird | 1:115.2.0-1 | DEBIAN-CVE-2023-4581 |
| Debian:14 | thunderbird | 1:115.2.0-1 | DEBIAN-CVE-2023-4581 |
| Rocky Linux:8 | firefox | 0:102.15.0-1.el8_8 | RLSA-2023:4952 |
| Rocky Linux:8 | thunderbird | 0:102.15.0-1.el8_8 | RLSA-2023:4954 |
| Ubuntu:22.04:LTS | mozjs102 | no fix listed | UBUNTU-CVE-2023-4581 |
| Ubuntu:24.04:LTS | mozjs102 | no fix listed | UBUNTU-CVE-2023-4581 |
| Ubuntu:22.04:LTS | mozjs78 | no fix listed | UBUNTU-CVE-2023-4581 |
| Ubuntu:22.04:LTS | mozjs91 | no fix listed | UBUNTU-CVE-2023-4581 |
| Ubuntu:22.04:LTS | thunderbird | 1:102.15.1+build1-0ubuntu0.22.04.1 | UBUNTU-CVE-2023-4581 |
| Ubuntu:22.04:LTS | thunderbird | 1:102.15.1+build1-0ubuntu0.22.04.1 | USN-6368-1 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | unspecified – before 117 |
| Mozilla | Firefox ESR | unspecified – before 102.15 |
| Mozilla | Firefox ESR | unspecified – before 115.2 |
| Mozilla | Thunderbird | unspecified – before 102.15 |
| Mozilla | Thunderbird | unspecified – before 115.2 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1843758
- https://www.mozilla.org/security/advisories/mfsa2023-34/
- https://www.mozilla.org/security/advisories/mfsa2023-35/
- https://www.mozilla.org/security/advisories/mfsa2023-36/
- https://www.mozilla.org/security/advisories/mfsa2023-37/
- https://www.mozilla.org/security/advisories/mfsa2023-38/