CVE-2023-4206
Linux kernel cls_route Use-After-Free Local Privilege Escalation
Description
A use-after-free vulnerability in the Linux kernel's net/sched: cls_route component can be exploited to achieve local privilege escalation. When route4_change() is called on an existing filter, the whole tcf_result struct is always copied into the new instance of the filter. This causes a problem when updating a filter bound to a class, as tcf_unbind_filter() is always called on the old instance in the success path, decreasing filter_cnt of the still referenced class and allowing it to be deleted, leading to a use-after-free. We recommend upgrading past commit b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8.
INFO
Published Date :
Sept. 6, 2023, 2:15 p.m.
Last Modified :
Feb. 15, 2024, 3:57 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2023-4206 has a 4 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-2023-4206.
| URL | Resource |
|---|---|
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8 | Issue Tracking Mailing List Patch Vendor Advisory |
| https://kernel.dance/b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8 | Patch Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html | Mailing List 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
None
Makefile C Assembly Shell Perl C++ Awk sed Python GDB
Archived EGI SVG Advisories
📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.
security cve exploit poc vulnerability
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-4206 vulnerability anywhere in the article.
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Cybersecurity News
Linux Kernel Vulnerabilities Expose Systems to Privilege Escalation: Flaws Detailed and Exploit Code Released
Security researchers have disclosed the technical details and proof-of-concept (PoC) exploit codes for three vulnerabilities (CVE-2023-4206, CVE-2023-4207, and CVE-2023-4208) in the Linux kernel, impa ... Read more
The following table lists the changes that have been made to the
CVE-2023-4206 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.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Feb. 15, 2024
Action Type Old Value New Value 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 CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 6.5 OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.18 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) 5.4.253 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.190 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.126 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.45 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.4.10 -
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] -
Initial Analysis by [email protected]
Sep. 11, 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=b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8 No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8 Issue Tracking, Mailing List, Patch, Vendor Advisory Changed Reference Type https://kernel.dance/b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8 No Types Assigned https://kernel.dance/b80b829e9e2c1b3f7aae34855e04d8f6ecaf13c8 Patch, Vendor 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 CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 6.5 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:* -
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]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-4206 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-2023-4206
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
0.05712
percentile