CVE-2023-2640
Ubuntu Kernel Overlayfs Permission Bypass
Description
On Ubuntu kernels carrying both c914c0e27eb0 and "UBUNTU: SAUCE: overlayfs: Skip permission checking for trusted.overlayfs.* xattrs", an unprivileged user may set privileged extended attributes on the mounted files, leading them to be set on the upper files without the appropriate security checks.
INFO
Published Date :
July 26, 2023, 2:15 a.m.
Last Modified :
Aug. 3, 2023, 3:10 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2023-2640 has a 39 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-2023-2640.
| URL | Resource |
|---|---|
| https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2640 | Third Party Advisory |
| https://lists.ubuntu.com/archives/kernel-team/2023-July/140923.html | Mailing List Patch |
| https://ubuntu.com/security/notices/USN-6250-1 | Vendor Advisory |
| https://wiz.io/blog/ubuntu-overlayfs-vulnerability | Exploit Mitigation 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).
Auto Root / Privilege Escalation Exploit
autoroot privilege privilege-escalation root
Shell
None
Shell
OSCP and stuffs
Testing on Ubuntu
Shell
None
Dockerfile PHP Shell
None
Python C Shell
None
Shell
OffSec Certified Professional Certification (OSCP).
oscp oscp-cheatsheet oscp-guide oscp-journey oscp-prep oscp-tools offsec-certified-professional-certification offensive-security offensivesecurity awesome-list awesome-lists cheatsheet offensive-ops
Oscp-notes
Escalating Privilege using CVE-2023-2640 CVE-2023-3262
Shell
None
PHP
None
Python C Shell
Ethical Hacking Repository
Python C Shell
OSCP Cheat Sheet
cheatsheet oscp
Python C Shell
CVE-2023-32629 & CVE-2023-2640 Ubuntu Privilege Escalation POC
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-2640 vulnerability anywhere in the article.
-
Kaspersky
Exploits and vulnerabilities in Q2 2024
Q2 2024 was eventful in terms of new interesting vulnerabilities and exploitation techniques for applications and operating systems. Attacks through vulnerable drivers have become prevalent as a gener ... Read more
The following table lists the changes that have been made to the
CVE-2023-2640 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 -
Initial Analysis by [email protected]
Aug. 03, 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://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2640 No Types Assigned https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2640 Third Party Advisory Changed Reference Type https://lists.ubuntu.com/archives/kernel-team/2023-July/140923.html No Types Assigned https://lists.ubuntu.com/archives/kernel-team/2023-July/140923.html Mailing List, Patch Changed Reference Type https://ubuntu.com/security/notices/USN-6250-1 No Types Assigned https://ubuntu.com/security/notices/USN-6250-1 Vendor Advisory Changed Reference Type https://wiz.io/blog/ubuntu-overlayfs-vulnerability No Types Assigned https://wiz.io/blog/ubuntu-overlayfs-vulnerability Exploit, Mitigation, Third Party Advisory Added CWE NIST CWE-863 Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:23.04:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-2640 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-2023-2640
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.21 }} 0.05%
score
0.59609
percentile