CVE-2023-34462
Netty SniHandler Buffer Overflow
Description
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. The `SniHandler` can allocate up to 16MB of heap for each channel during the TLS handshake. When the handler or the channel does not have an idle timeout, it can be used to make a TCP server using the `SniHandler` to allocate 16MB of heap. The `SniHandler` class is a handler that waits for the TLS handshake to configure a `SslHandler` according to the indicated server name by the `ClientHello` record. For this matter it allocates a `ByteBuf` using the value defined in the `ClientHello` record. Normally the value of the packet should be smaller than the handshake packet but there are not checks done here and the way the code is written, it is possible to craft a packet that makes the `SslClientHelloHandler`. This vulnerability has been fixed in version 4.1.94.Final.
INFO
Published Date :
June 22, 2023, 11:15 p.m.
Last Modified :
Nov. 21, 2024, 8:07 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.8
Public PoC/Exploit Available at Github
CVE-2023-34462 has a 1 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-2023-34462.
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).
None
Shell Python HCL JavaScript PHP Go Dockerfile
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-34462 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-34462 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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://github.com/netty/netty/commit/535da17e45201ae4278c0479e6162bb4127d4c32 Added Reference https://github.com/netty/netty/security/advisories/GHSA-6mjq-h674-j845 Added Reference https://security.netapp.com/advisory/ntap-20230803-0001/ Added Reference https://security.netapp.com/advisory/ntap-20240621-0007/ Added Reference https://www.debian.org/security/2023/dsa-5558 -
CVE Modified by [email protected]
Jun. 21, 2024
Action Type Old Value New Value Added Reference GitHub, Inc. https://security.netapp.com/advisory/ntap-20240621-0007/ [No types assigned] -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 18, 2023
Action Type Old Value New Value Added Reference GitHub, Inc. https://www.debian.org/security/2023/dsa-5558 [No types assigned] -
CVE Modified by [email protected]
Aug. 03, 2023
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20230803-0001/ [No Types Assigned] -
Initial Analysis by [email protected]
Jun. 30, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://github.com/netty/netty/commit/535da17e45201ae4278c0479e6162bb4127d4c32 No Types Assigned https://github.com/netty/netty/commit/535da17e45201ae4278c0479e6162bb4127d4c32 Patch Changed Reference Type https://github.com/netty/netty/security/advisories/GHSA-6mjq-h674-j845 No Types Assigned https://github.com/netty/netty/security/advisories/GHSA-6mjq-h674-j845 Exploit, Vendor Advisory Added CWE NIST CWE-770 Added CPE Configuration OR *cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:* versions up to (excluding) 4.1.94
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-34462 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-2023-34462
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.12 }} -0.00%
score
0.46794
percentile