CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.1 | $0-$5k | 0.00 |
A vulnerability was found in libssh 0.4.7/0.4.8/0.5.0/0.5.1/0.5.2. It has been declared as problematic. This vulnerability affects an unknown functionality of the file keys.c. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. CVE summarizes:
The (1) publickey_make_dss, (2) publickey_make_rsa, (3) signature_from_string, (4) ssh_do_sign, and (5) ssh_sign_session_id functions in keys.c in libssh before 0.5.3 free "an invalid pointer on an error path," which might allow remote attackers cause a denial of service (crash) via unspecified vectors.
The weakness was released 11/30/2012 by Florian Weimer with Red Hat Product Security Team as Bug 871617 as not defined bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability was named CVE-2012-4561 since 08/21/2012. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.
The vulnerability scanner Nessus provides a plugin with the ID 63125 (Debian DSA-2577-1 : libssh - several vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165818 (SUSE Security Update for libssh (openSUSE-SU-2013:0130-1)).
Upgrading to version 0.4.7 eliminates this vulnerability.
The vulnerability is also documented in the databases at X-Force (80220), Tenable (63125), SecurityFocus (BID 56604†) and Vulnerability Center (SBV-37473†). Entries connected to this vulnerability are available at VDB-63109, VDB-63107, VDB-63105 and VDB-63104.
Product
Name
Version
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.3VulDB Meta Temp Score: 5.1
VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Denial of serviceCWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Nessus ID: 63125
Nessus Name: Debian DSA-2577-1 : libssh - several vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
OpenVAS ID: 72627
OpenVAS Name: Debian Security Advisory DSA 2577-1 (libssh)
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: libssh 0.4.7
Timeline
08/21/2012 🔍11/20/2012 🔍
11/20/2012 🔍
11/30/2012 🔍
11/30/2012 🔍
12/02/2012 🔍
03/24/2015 🔍
12/20/2021 🔍
Sources
Advisory: Bug 871617Researcher: Florian Weimer
Organization: Red Hat Product Security Team
Status: Not defined
Confirmation: 🔍
CVE: CVE-2012-4561 (🔍)
OVAL: 🔍
X-Force: 80220
SecurityFocus: 56604 - libssh Multiple Buffer Overflow and Denial of Service Vulnerabilities
Vulnerability Center: 37473 - Libssh <0.5.3 Multiple Functions Errors Allow Remote DoS\\ Code Execution, Medium
See also: 🔍
Entry
Created: 03/24/2015 12:22 PMUpdated: 12/20/2021 03:28 PM
Changes: 03/24/2015 12:22 PM (68), 04/22/2017 09:13 AM (7), 12/20/2021 03:28 PM (3)
Complete: 🔍
Cache ID: 18:1D3:40
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