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VULNERABILITIES

CVE-2023-6862 Details

Description

A use-after-free was identified in the `nsDNSService::Init`. This issue appears to manifest rarely during start-up. This vulnerability affects Firefox ESR < 115.6 and Thunderbird < 115.6.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:8.8 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://bugzilla.mozilla.org/show_bug.cgi?id=1868042 CVEIssue TrackingPermissions Required
https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html CVEMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html CVEMailing ListThird Party Advisory
https://security.gentoo.org/glsa/202401-10 CVEThird Party Advisory
https://www.debian.org/security/2023/dsa-5581 CVEThird Party Advisory

see all 16 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-416Use After Free[email protected]

Affected Products

ProductVersions
mozilla firefox esr
< 115.6

CPE

  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
mozilla thunderbird
< 115.6

CPE

  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
debian debian linux
10.0
11.0
12.0

CPE

  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

11 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2023-6862
NVD Published Date:
Dec 19, 2023
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2023-6862 Details - Not Deferred