CVE-2023-3603
OpenSSH NULL Dereference Vulnerability
Description
A missing allocation check in sftp server processing read requests may cause a NULL dereference on low-memory conditions. The malicious client can request up to 4GB SFTP reads, causing allocation of up to 4GB buffers, which was not being checked for failure. This will likely crash the authenticated user's sftp server connection (if implemented as forking as recommended). For thread-based servers, this might also cause DoS for legitimate users. Given this code is not in any released versions, no security releases have been issued.
INFO
Published Date :
July 21, 2023, 8:15 p.m.
Last Modified :
May 23, 2024, 5:56 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.8
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-2023-3603.
| URL | Resource |
|---|---|
| https://access.redhat.com/security/cve/CVE-2023-3603 | Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2221791 | Issue Tracking 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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-3603 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-3603 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]
May. 23, 2024
Action Type Old Value New Value Removed CWE NIST CWE-770 Added CWE NIST CWE-476 Changed CPE Configuration OR *cpe:2.3:a:libssh:libssh:-:*:*:*:*:*:*:* OR *cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:* versions up to (excluding) 0.8.9 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added CWE Red Hat, Inc. CWE-476 -
Initial Analysis by [email protected]
Aug. 01, 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://access.redhat.com/security/cve/CVE-2023-3603 No Types Assigned https://access.redhat.com/security/cve/CVE-2023-3603 Third Party Advisory Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=2221791 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=2221791 Issue Tracking, Third Party Advisory Added CWE NIST CWE-770 Added CPE Configuration OR *cpe:2.3:a:libssh:libssh:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-3603 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-2023-3603
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.01%
score
0.27244
percentile