CVE-2023-3776
Linux Kernel cls_fw Use-After-Free Local Privilege Escalation
Description
A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability. We recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.
INFO
Published Date :
July 21, 2023, 9:15 p.m.
Last Modified :
Aug. 22, 2024, 8:24 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2023-3776 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2023-3776.
| URL | Resource |
|---|---|
| http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html | Third Party Advisory VDB Entry |
| http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html | Third Party Advisory VDB Entry |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=0323bce598eea038714f941ce2b22541c46d488f | Mailing List Patch Vendor Advisory |
| https://kernel.dance/0323bce598eea038714f941ce2b22541c46d488f | Patch Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html | Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20240202-0003/ | Third Party Advisory |
| https://www.debian.org/security/2023/dsa-5480 | Third Party Advisory |
| https://www.debian.org/security/2023/dsa-5492 | Third Party 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).
collect ctf challenges we joined
Exploit for Real World CTF 6th RIPTC.
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Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-3776 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-3776 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.
-
Modified Analysis by [email protected]
Aug. 22, 2024
Action Type Old Value New Value Changed Reference Type http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html No Types Assigned http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html Third Party Advisory, VDB Entry Changed Reference Type https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html No Types Assigned https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html Mailing List, Third Party Advisory Changed Reference Type https://security.netapp.com/advisory/ntap-20240202-0003/ No Types Assigned https://security.netapp.com/advisory/ntap-20240202-0003/ Third Party Advisory Changed CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6 up to (excluding) 6.5 *cpe:2.3:o:linux:linux_kernel:6.5:rc1:*:*:*:*:*:* OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.12 up to (excluding) 4.14.322 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.291 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.251 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.188 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.121 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.40 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.4.5 *cpe:2.3:o:linux:linux_kernel:6.5:rc1:*:*:*:*:*:* -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Feb. 02, 2024
Action Type Old Value New Value Added Reference Google Inc. https://security.netapp.com/advisory/ntap-20240202-0003/ [No types assigned] -
CVE Modified by [email protected]
Jan. 11, 2024
Action Type Old Value New Value Added Reference Google Inc. https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html [No types assigned] -
CVE Modified by [email protected]
Nov. 29, 2023
Action Type Old Value New Value Added Reference Google Inc. http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html [No types assigned] -
Modified Analysis by [email protected]
Oct. 26, 2023
Action Type Old Value New Value Changed Reference Type http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html No Types Assigned http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html Third Party Advisory, VDB Entry Changed Reference Type https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html No Types Assigned https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html Mailing List, Third Party Advisory Changed Reference Type https://www.debian.org/security/2023/dsa-5480 No Types Assigned https://www.debian.org/security/2023/dsa-5480 Third Party Advisory Changed Reference Type https://www.debian.org/security/2023/dsa-5492 No Types Assigned https://www.debian.org/security/2023/dsa-5492 Third Party Advisory Added CPE Configuration 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]
Oct. 20, 2023
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html [No Types Assigned] -
CVE Modified by [email protected]
Oct. 11, 2023
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html [No Types Assigned] -
CVE Modified by [email protected]
Sep. 10, 2023
Action Type Old Value New Value Added Reference https://www.debian.org/security/2023/dsa-5492 [No Types Assigned] -
CVE Modified by [email protected]
Aug. 19, 2023
Action Type Old Value New Value Added Reference https://www.debian.org/security/2023/dsa-5480 [No Types Assigned] -
Initial Analysis by [email protected]
Jul. 31, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=0323bce598eea038714f941ce2b22541c46d488f No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=0323bce598eea038714f941ce2b22541c46d488f Mailing List, Patch, Vendor Advisory Changed Reference Type https://kernel.dance/0323bce598eea038714f941ce2b22541c46d488f No Types Assigned https://kernel.dance/0323bce598eea038714f941ce2b22541c46d488f Patch, Vendor Advisory Added CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6 up to (excluding) 6.5 *cpe:2.3:o:linux:linux_kernel:6.5:rc1:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-3776 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-2023-3776
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} -0.01%
score
0.05717
percentile