CVE-2023-6857
Mozilla Firefox Symlink Buffer Underflow Vulnerability
Description
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.
INFO
Published Date :
Dec. 19, 2023, 2:15 p.m.
Last Modified :
Feb. 2, 2024, 2:32 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
1.6
Affected Products
The following products are affected by CVE-2023-6857
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-6857.
| URL | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1796023 | Issue Tracking Permissions Required |
| https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202401-10 | Third Party Advisory |
| https://www.debian.org/security/2023/dsa-5581 | Third Party Advisory |
| https://www.debian.org/security/2023/dsa-5582 | Third Party Advisory |
| https://www.mozilla.org/security/advisories/mfsa2023-54/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2023-55/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2023-56/ | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-6857 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-6857 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Feb. 02, 2024
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html No Types Assigned https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html Mailing List, Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html No Types Assigned https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html Mailing List, Third Party Advisory Changed Reference Type https://security.gentoo.org/glsa/202401-10 No Types Assigned https://security.gentoo.org/glsa/202401-10 Third Party Advisory Changed CPE Configuration OR *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:* OR *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:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jan. 07, 2024
Action Type Old Value New Value Added Reference Mozilla Corporation https://security.gentoo.org/glsa/202401-10 [No types assigned] -
CVE Modified by [email protected]
Dec. 29, 2023
Action Type Old Value New Value Added Reference Mozilla Corporation https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html [No types assigned] Added Reference Mozilla Corporation https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html [No types assigned] -
Initial Analysis by [email protected]
Dec. 22, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N Changed Reference Type https://bugzilla.mozilla.org/show_bug.cgi?id=1796023 No Types Assigned https://bugzilla.mozilla.org/show_bug.cgi?id=1796023 Issue Tracking, Permissions Required Changed Reference Type https://www.debian.org/security/2023/dsa-5581 No Types Assigned https://www.debian.org/security/2023/dsa-5581 Third Party Advisory Changed Reference Type https://www.debian.org/security/2023/dsa-5582 No Types Assigned https://www.debian.org/security/2023/dsa-5582 Third Party Advisory Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2023-54/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2023-54/ Vendor Advisory Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2023-55/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2023-55/ Vendor Advisory Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2023-56/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2023-56/ Vendor Advisory Added CWE NIST CWE-362 Added CPE Configuration AND OR *cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* versions up to (excluding) 121.0 *cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* versions up to (excluding) 115.6 *cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* versions up to (excluding) 115.6 OR cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* cpe:2.3:o:google:android:-:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Dec. 22, 2023
Action Type Old Value New Value Added Reference Mozilla Corporation https://www.debian.org/security/2023/dsa-5582 [No types assigned] -
CVE Modified by [email protected]
Dec. 21, 2023
Action Type Old Value New Value Added Reference Mozilla Corporation https://www.debian.org/security/2023/dsa-5581 [No types assigned] -
CVE Received by [email protected]
Dec. 19, 2023
Action Type Old Value New Value Added Description 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. Added Reference Mozilla Corporation https://bugzilla.mozilla.org/show_bug.cgi?id=1796023 [No types assigned] Added Reference Mozilla Corporation https://www.mozilla.org/security/advisories/mfsa2023-54/ [No types assigned] Added Reference Mozilla Corporation https://www.mozilla.org/security/advisories/mfsa2023-55/ [No types assigned] Added Reference Mozilla Corporation https://www.mozilla.org/security/advisories/mfsa2023-56/ [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-6857 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-6857
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.13 }} 0.02%
score
0.49114
percentile