CVE-2023-43632
EVE VTPM Stack Buffer Overflow Vulnerability
Description
As noted in the “VTPM.md” file in the eve documentation, “VTPM is a server listening on port 8877 in EVE, exposing limited functionality of the TPM to the clients. VTPM allows clients to execute tpm2-tools binaries from a list of hardcoded options” The communication with this server is done using protobuf, and the data is comprised of 2 parts: 1. Header 2. Data When a connection is made, the server is waiting for 4 bytes of data, which will be the header, and these 4 bytes would be parsed as uint32 size of the actual data to come. Then, in the function “handleRequest” this size is then used in order to allocate a payload on the stack for the incoming data. As this payload is allocated on the stack, this will allow overflowing the stack size allocated for the relevant process with freely controlled data. * An attacker can crash the system. * An attacker can gain control over the system, specifically on the “vtpm_server” process which has very high privileges.
INFO
Published Date :
Sept. 21, 2023, 2:15 p.m.
Last Modified :
Sept. 28, 2023, 6:15 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
6.0
Exploitability Score :
3.1
Affected Products
The following products are affected by CVE-2023-43632
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-2023-43632.
| URL | Resource |
|---|---|
| https://asrg.io/security-advisories/cve-2023-43632/ |
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-2023-43632 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-43632 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 -
CVE Modified by [email protected]
Sep. 28, 2023
Action Type Old Value New Value Removed Reference https://asrg.io/security-advisories/freely-allocate-buffer-on-the-stack-with-data-from-socket/ [Third Party Advisory] Added Reference https://asrg.io/security-advisories/cve-2023-43632/ [No Types Assigned] -
Initial Analysis by [email protected]
Sep. 25, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Changed Reference Type https://asrg.io/security-advisories/freely-allocate-buffer-on-the-stack-with-data-from-socket/ No Types Assigned https://asrg.io/security-advisories/freely-allocate-buffer-on-the-stack-with-data-from-socket/ Third Party Advisory Added CWE NIST CWE-770 Added CPE Configuration OR *cpe:2.3:o:linuxfoundation:edge_virtualization_engine:*:*:*:*:*:*:*:* versions from (including) 3.0.0 up to (excluding) 9.5.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-43632 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-2023-43632
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.09 }} 0.03%
score
0.38620
percentile