CVE-2023-6873 — Out-of-bounds Write in Mozilla Firefox

CWE-787 — Out-of-bounds Write10 documents7 sources
Severity
8.8HIGHNVD
OSV4.3
EPSS
0.4%
top 40.27%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Mozilla FirefoxMozilla ThunderbirdDebian Linux
Timeline
PublishedDec 19
Latest updateJan 11

Description

Memory safety bugs present in Firefox 120. 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 < 121.

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 Packages4 packages

▶CVEListV5mozilla/firefoxunspecified — 121
▶NVDmozilla/firefox< 121.0
▶Ubuntumozilla/firefox< 121.0+build1-0ubuntu0.20.04.1+1
▶Debianmozilla/thunderbird< 1:115.6.0-1~deb11u1+1

Also affects: Debian Linux 10.0, 11.0, 12.0

🔴Vulnerability Details

5
OSV
firefox regressions↗2024-01-11
▶
OSV
firefox vulnerabilities↗2024-01-02
▶
GHSA
GHSA-9f8v-397v-w8c6: Memory safety bugs present in Firefox 120↗2023-12-19
▶
OSV
CVE-2023-6873: Memory safety bugs present in Firefox 120↗2023-12-19
▶
CVEList
CVE-2023-6873: Memory safety bugs present in Firefox 120↗2023-12-19
▶

📋Vendor Advisories

4
Ubuntu
Firefox regressions↗2024-01-11
▶
Ubuntu
Firefox vulnerabilities↗2024-01-02
▶
Debian
CVE-2023-6873: firefox - Memory safety bugs present in Firefox 120. Some of these bugs showed evidence of...↗2023
▶
Mozilla
Mozilla Foundation Security Advisory 2023-56: CVE-2023-6873↗
▶
CVE-2023-6873 — Out-of-bounds Write in Mozilla Firefox | cvebase