Vulnerability Details : CVE-2023-6858
Firefox was susceptible to a heap buffer overflow in `nsTextFragment` due to insufficient OOM handling. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.
Vulnerability category: OverflowMemory Corruption
Products affected by CVE-2023-6858
- 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:firefox:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-6858
0.18%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 55 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-6858
| 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-2023-6858
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2023-6858
-
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://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://www.mozilla.org/security/advisories/mfsa2023-56/
Security Vulnerabilities fixed in Firefox 121 — MozillaVendor Advisory
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1826791
Access DeniedIssue Tracking;Permissions Required
-
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
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