CVE-2023-2283
Libssh Authentication Bypass Memory Allocation Vulnerability
Description
A vulnerability was found in libssh, where the authentication check of the connecting client can be bypassed in the`pki_verify_data_signature` function in memory allocation problems. This issue may happen if there is insufficient memory or the memory usage is limited. The problem is caused by the return value `rc,` which is initialized to SSH_ERROR and later rewritten to save the return value of the function call `pki_key_check_hash_compatible.` The value of the variable is not changed between this point and the cryptographic verification. Therefore any error between them calls `goto error` returning SSH_OK.
INFO
Published Date :
May 26, 2023, 6:15 p.m.
Last Modified :
Feb. 1, 2024, 5:15 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
2.5
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2023-2283 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2023-2283
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-2023-2283.
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
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-2283 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-2283 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]
Feb. 01, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. https://security.netapp.com/advisory/ntap-20240201-0005/ [No types assigned] -
CVE Modified by [email protected]
Dec. 22, 2023
Action Type Old Value New Value Added Reference Red Hat, Inc. https://security.gentoo.org/glsa/202312-05 [No types assigned] -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/27PD44ALQTZXX7K6JAM3BXBUHYA6DFFN/ [No types assigned] Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/27PD44ALQTZXX7K6JAM3BXBUHYA6DFFN/ -
CVE Modified by [email protected]
Jun. 12, 2023
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/172861/libssh-0.9.6-0.10.4-pki_verify_data_signature-Authorization-Bypass.html [No Types Assigned] -
Initial Analysis by [email protected]
Jun. 06, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Changed Reference Type https://access.redhat.com/security/cve/CVE-2023-2283 No Types Assigned https://access.redhat.com/security/cve/CVE-2023-2283 Third Party Advisory Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=2189736 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=2189736 Issue Tracking, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/27PD44ALQTZXX7K6JAM3BXBUHYA6DFFN/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/27PD44ALQTZXX7K6JAM3BXBUHYA6DFFN/ Mailing List, Third Party Advisory Changed Reference Type https://www.libssh.org/security/advisories/CVE-2023-2283.txt No Types Assigned https://www.libssh.org/security/advisories/CVE-2023-2283.txt Vendor Advisory Added CWE NIST CWE-287 Added CPE Configuration OR *cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:* versions from (including) 0.9.1 up to (including) 0.9.6 *cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:* versions from (including) 0.10.0 up to (including) 0.10.4 Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
May. 28, 2023
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/27PD44ALQTZXX7K6JAM3BXBUHYA6DFFN/ [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-2023-2283 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-2023-2283
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.15 }} 0.02%
score
0.52040
percentile