CVE-2023-6212 — Out-of-bounds Write in Mozilla Firefox

CWE-787 — Out-of-bounds WriteCWE-120 — Classic Buffer Overflow14 documents8 sources
Severity
8.8HIGHNVD
OSV6.5
EPSS
0.4%
top 39.99%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Mozilla FirefoxMozilla Firefox ESRMozilla Thunderbird+1 more
Timeline
PublishedNov 21
Latest updateDec 4

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages9 packages

▶CVEListV5mozilla/firefoxunspecified — 120
▶NVDmozilla/firefox< 120.0
▶CVEListV5mozilla/firefox_esrunspecified — 115.5.0
▶NVDmozilla/firefox_esr< 115.5.0
▶Ubuntumozilla/firefox< 120.0+build2-0ubuntu0.20.04.1

Also affects: Debian Linux 10.0, 11.0, 12.0

🔴Vulnerability Details

6
OSV
firefox regressions↗2023-12-04
▶
OSV
thunderbird vulnerabilities↗2023-11-27
▶
OSV
firefox vulnerabilities↗2023-11-23
▶
GHSA
GHSA-4cv2-qh42-x2j4: Memory safety bugs present in Firefox 119, Firefox 115↗2023-11-21
▶
CVEList
CVE-2023-6212: Memory safety bugs present in Firefox 119, Firefox ESR 115↗2023-11-21
▶

📋Vendor Advisories

7
Ubuntu
Thunderbird vulnerabilities↗2023-11-27
▶
Ubuntu
Firefox vulnerabilities↗2023-11-23
▶
Red Hat
Mozilla: Memory safety bugs fixed in Firefox 120, Firefox ESR 115.5, and Thunderbird 115.5↗2023-11-21
▶
Debian
CVE-2023-6212: firefox - Memory safety bugs present in Firefox 119, Firefox ESR 115.4, and Thunderbird 11...↗2023
▶
Mozilla
Mozilla Foundation Security Advisory 2023-52: CVE-2023-6212↗
▶
CVE-2023-6212 — Out-of-bounds Write in Mozilla Firefox | cvebase