Vulnerability · Published Aug 1, 2023 · Assigned by mozilla
CVE-2023-4056
Critical 9.8
In plain English
A critical-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 0.9% (higher than 61% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)0.9%top 38.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Memory safety bugs present in Firefox 115, Firefox ESR 115.0, Firefox ESR 102.13, Thunderbird 115.0, and Thunderbird 102.13. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | firefox | 102.14.0-1.el8_8.alma | ALSA-2023:4468 |
| AlmaLinux:9 | firefox | 102.14.0-1.el9_2.alma | ALSA-2023:4462 |
| AlmaLinux:9 | firefox-x11 | 102.14.0-1.el9_2.alma | ALSA-2023:4462 |
| AlmaLinux:8 | thunderbird | 102.14.0-1.el8_8.alma | ALSA-2023:4497 |
| AlmaLinux:9 | thunderbird | 102.14.0-1.el9_2.alma | ALSA-2023:4499 |
| Alpine:v3.20 | firefox-esr | 115.1.0-r0 | ALPINE-CVE-2023-4056 |
| Alpine:v3.21 | firefox-esr | 115.1.0-r0 | ALPINE-CVE-2023-4056 |
| Alpine:v3.22 | firefox-esr | 115.1.0-r0 | ALPINE-CVE-2023-4056 |
| Alpine:v3.23 | firefox-esr | 115.1.0-r0 | ALPINE-CVE-2023-4056 |
| Debian:12 | firefox-esr | 102.14.0esr-1~deb12u1 | DEBIAN-CVE-2023-4056 |
| Debian:12 | firefox-esr | 102.14.0esr-1~deb12u1 | DSA-5464-1 |
| Debian:13 | firefox-esr | 115.1.0esr-1 | DEBIAN-CVE-2023-4056 |
| Debian:14 | firefox-esr | 115.1.0esr-1 | DEBIAN-CVE-2023-4056 |
| Debian:12 | thunderbird | 1:102.14.0-1~deb12u1 | DSA-5469-1 |
| Debian:12 | thunderbird | 1:102.14.0-1~deb12u1 | DEBIAN-CVE-2023-4056 |
| Debian:13 | thunderbird | 1:115.1.0-1 | DEBIAN-CVE-2023-4056 |
| Debian:14 | thunderbird | 1:115.1.0-1 | DEBIAN-CVE-2023-4056 |
| Rocky Linux:8 | firefox | 0:102.14.0-1.el8_8 | RLSA-2023:4468 |
| Rocky Linux:9 | firefox | 0:102.14.0-1.el9_2 | RLSA-2023:4462 |
| Rocky Linux:8 | thunderbird | 0:102.14.0-1.el8_8 | RLSA-2023:4497 |
| Rocky Linux:9 | thunderbird | 0:102.14.0-1.el9_2 | RLSA-2023:4499 |
| Ubuntu:22.04:LTS | mozjs102 | no fix listed | UBUNTU-CVE-2023-4056 |
| Ubuntu:24.04:LTS | mozjs102 | no fix listed | UBUNTU-CVE-2023-4056 |
| Ubuntu:22.04:LTS | mozjs78 | no fix listed | UBUNTU-CVE-2023-4056 |
| Ubuntu:22.04:LTS | mozjs91 | no fix listed | UBUNTU-CVE-2023-4056 |
| Ubuntu:22.04:LTS | thunderbird | 1:102.15.0+build1-0ubuntu0.22.04.1 | UBUNTU-CVE-2023-4056 |
| Ubuntu:22.04:LTS | thunderbird | 1:102.15.0+build1-0ubuntu0.22.04.1 | USN-6333-1 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | unspecified – before 116 |
| Mozilla | Firefox ESR | unspecified – before 102.14 |
| Mozilla | Firefox ESR | unspecified – before 115.1 |
References
- Memory safety bugs fixed in Firefox 116, Firefox ESR 115.1, Firefox ESR 102.14, Thunderbird 115.1, and Thunderbird 102.14
- https://www.mozilla.org/security/advisories/mfsa2023-29/
- https://www.mozilla.org/security/advisories/mfsa2023-30/
- https://www.mozilla.org/security/advisories/mfsa2023-31/
- https://www.debian.org/security/2023/dsa-5464
- https://www.debian.org/security/2023/dsa-5469
- https://lists.debian.org/debian-lts-announce/2023/08/msg00008.html
- https://lists.debian.org/debian-lts-announce/2023/08/msg00010.html