Vulnerability Details : CVE-2023-6857
When resolving a symlink, a race may occur where the buffer passed to `readlink` may actually be smaller than necessary.
*This bug only affects Firefox on Unix-based operating systems (Android, Linux, MacOS). Windows is unaffected.* This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.
Products affected by CVE-2023-6857
- 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-2023-6857
0.25%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 64 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-6857
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N |
1.6
|
3.6
|
NIST |
CWE ids for CVE-2023-6857
-
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.Assigned by: nvd@nist.gov (Primary)
References for CVE-2023-6857
-
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=1796023
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
Jump to