Vulnerability Details : CVE-2023-6862
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.
Vulnerability category: Memory Corruption
Products affected by CVE-2023-6862
- 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:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-6862
1.31%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 78 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-6862
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2023-6862
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2023-6862
-
https://www.mozilla.org/security/advisories/mfsa2023-54/
Security Vulnerabilities fixed in Firefox ESR 115.6 — MozillaVendor Advisory
-
https://security.gentoo.org/glsa/202401-10
Mozilla Firefox: Multiple Vulnerabilities (GLSA 202401-10) — Gentoo securityThird Party Advisory
-
https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html
[SECURITY] [DLA 3698-1] thunderbird security updateMailing List;Third Party Advisory
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1868042
Access DeniedIssue Tracking;Permissions Required
-
https://www.debian.org/security/2023/dsa-5582
Debian -- Security Information -- DSA-5582-1 thunderbirdThird Party Advisory
-
https://www.debian.org/security/2023/dsa-5581
Debian -- Security Information -- DSA-5581-1 firefox-esrThird Party Advisory
-
https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html
[SECURITY] [DLA 3697-1] firefox-esr security updateMailing List;Third Party Advisory
-
https://www.mozilla.org/security/advisories/mfsa2023-55/
Security Vulnerabilities fixed in Thunderbird 115.6 — MozillaVendor Advisory
Jump to