CVE-2023-6205 — Use After Free in Mozilla Firefox

CWE-416 — Use After Free13 documents8 sources
Severity
6.5MEDIUMNVD
EPSS
0.4%
top 38.34%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Mozilla FirefoxMozilla Firefox ESRMozilla Thunderbird+1 more
Timeline
PublishedNov 21
Latest updateNov 27

Description

It was possible to cause the use of a MessagePort after it had already been freed, which could potentially have led to an exploitable crash. 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:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages7 packages

▶CVEListV5mozilla/firefoxunspecified — 120
▶NVDmozilla/firefox< 120.0
▶CVEListV5mozilla/firefox_esrunspecified — 115.5.0
▶NVDmozilla/firefox_esr< 115.5.0
▶CVEListV5mozilla/thunderbirdunspecified — 115.5

Also affects: Debian Linux 10.0, 11.0, 12.0

🔴Vulnerability Details

5
OSV
thunderbird vulnerabilities↗2023-11-27
▶
OSV
firefox vulnerabilities↗2023-11-23
▶
CVEList
CVE-2023-6205: It was possible to cause the use of a MessagePort after it had already been freed, which could potentially have led to an exploitable crash↗2023-11-21
▶
OSV
CVE-2023-6205: It was possible to cause the use of a MessagePort after it had already been freed, which could potentially have led to an exploitable crash↗2023-11-21
▶
GHSA
GHSA-h4m4-6cfw-5q6g: It was possible to cause the use of a MessagePort after it had already been freed, which could potentially have led to an exploitable crash↗2023-11-21
▶

📋Vendor Advisories

7
Ubuntu
Thunderbird vulnerabilities↗2023-11-27
▶
Ubuntu
Firefox vulnerabilities↗2023-11-23
▶
Red Hat
Mozilla: Use-after-free in MessagePort::Entangled↗2023-11-21
▶
Debian
CVE-2023-6205: firefox - It was possible to cause the use of a MessagePort after it had already been free...↗2023
▶
Mozilla
Mozilla Foundation Security Advisory 2023-49: CVE-2023-6205↗
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CVE-2023-6205 — Use After Free in Mozilla Firefox | cvebase