Log in Start free

Vulnerability · Published Nov 21, 2023 · Assigned by mozilla

CVE-2023-6212

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 0.9% (higher than 61% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)8.8High
Exploit odds (30 days)0.9%top 38.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Memory safety bugs present in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4. 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 < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8firefox115.5.0-1.el8_9.alma.1ALSA-2023:7508
AlmaLinux:9firefox115.5.0-1.el9_3.alma.1ALSA-2023:7507
AlmaLinux:9firefox-x11115.5.0-1.el9_3.alma.1ALSA-2023:7507
AlmaLinux:8thunderbird115.5.0-1.el8_9.alma.1ALSA-2023:7500
AlmaLinux:9thunderbird115.5.0-1.el9_3.almaALSA-2023:7501
Alpine:v3.20firefox-esr115.5.0-r0ALPINE-CVE-2023-6212
Alpine:v3.21firefox-esr115.5.0-r0ALPINE-CVE-2023-6212
Alpine:v3.22firefox-esr115.5.0-r0ALPINE-CVE-2023-6212
Alpine:v3.23firefox-esr115.5.0-r0ALPINE-CVE-2023-6212
Alpine:v3.20thunderbird115.5.0-r0ALPINE-CVE-2023-6212
Alpine:v3.21thunderbird115.5.0-r0ALPINE-CVE-2023-6212
Alpine:v3.22thunderbird115.5.0-r0ALPINE-CVE-2023-6212
Alpine:v3.23thunderbird115.5.0-r0ALPINE-CVE-2023-6212
Debian:12firefox-esr115.5.0esr-1~deb12u1DSA-5561-1
Debian:12firefox-esr115.5.0esr-1~deb12u1DEBIAN-CVE-2023-6212
Debian:13firefox-esr115.5.0esr-1DEBIAN-CVE-2023-6212
Debian:14firefox-esr115.5.0esr-1DEBIAN-CVE-2023-6212
Debian:12thunderbird1:115.5.0-1~deb12u1DSA-5566-1
Debian:12thunderbird1:115.5.0-1~deb12u1DEBIAN-CVE-2023-6212
Debian:13thunderbird1:115.5.0-1DEBIAN-CVE-2023-6212
Debian:14thunderbird1:115.5.0-1DEBIAN-CVE-2023-6212
Rocky Linux:8thunderbird0:115.5.0-1.el8_9RLSA-2023:7500
Ubuntu:22.04:LTSmozjs102no fix listedUBUNTU-CVE-2023-6212
Ubuntu:24.04:LTSmozjs102no fix listedUBUNTU-CVE-2023-6212
Ubuntu:22.04:LTSmozjs78no fix listedUBUNTU-CVE-2023-6212
Ubuntu:22.04:LTSmozjs91no fix listedUBUNTU-CVE-2023-6212
Ubuntu:22.04:LTSthunderbird1:115.5.0+build1-0ubuntu0.22.04.1USN-6515-1
Ubuntu:22.04:LTSthunderbird1:115.5.0+build1-0ubuntu0.22.04.1UBUNTU-CVE-2023-6212
Ubuntu:24.04:LTSthunderbird1:115.5.0+build1-0ubuntu1UBUNTU-CVE-2023-6212

Affected products (as reported)

VendorProductVersions
Mozilla Firefox unspecified – before 120
Mozilla Firefox ESR unspecified – before 115.5.0
Mozilla Thunderbird unspecified – before 115.5

References