libssh up to 0.5.3 publickey_from_privatekey resource management

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in libssh up to 0.5.3. It has been rated as problematic. This affects the function publickey_from_privatekey. This manipulation causes resource management. This vulnerability is handled as CVE-2013-0176. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in libssh up to 0.5.3. It has been declared as problematic. Affected by this vulnerability is the function publickey_from_privatekey. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability. The summary by CVE is:

The publickey_from_privatekey function in libssh before 0.5.4, when no algorithm is matched during negotiations, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a "Client: Diffie-Hellman Key Exchange Init" packet.

The weakness was released 02/05/2013 (Website). It is possible to read the advisory at libssh.org. This vulnerability is known as CVE-2013-0176 since 12/06/2012. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 64416 (Fedora 17 : libssh-0.5.4-1.fc17 (2013-1422)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195318 (Ubuntu Security Notification for Libssh Vulnerability (USN-1707-1)).

Upgrading to version 0.5.3 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (81595), Tenable (64416), SecurityFocus (BID 57571†), Secunia (SA51982†) and Vulnerability Center (SBV-38353†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 64416
Nessus Name: Fedora 17 : libssh-0.5.4-1.fc17 (2013-1422)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 865305
OpenVAS Name: Fedora Update for libssh FEDORA-2013-1407
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libssh 0.5.3
ISS Proventia IPS: 🔍

Timelineinfo

11/04/2012 🔍
12/06/2012 +32 days 🔍
01/22/2013 +47 days 🔍
01/29/2013 +7 days 🔍
02/04/2013 +6 days 🔍
02/05/2013 +1 days 🔍
02/05/2013 +0 days 🔍
02/11/2013 +6 days 🔍
03/24/2015 +771 days 🔍
12/28/2024 +3567 days 🔍

Sourcesinfo

Advisory: USN-1707-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-0176 (🔍)
GCVE (CVE): GCVE-0-2013-0176
GCVE (VulDB): GCVE-100-63511

OVAL: 🔍

X-Force: 81595
SecurityFocus: 57571 - libssh CVE-2013-0176 Denial of Service Vulnerability
Secunia: 51982 - Ubuntu update for libssh, Moderately Critical
Vulnerability Center: 38353 - LibSSH <0.5.4 Remote Denial of Service via a Client: Diffie-Hellman Key Exchange Init Packet, Medium

Entryinfo

Created: 03/24/2015 12:22
Updated: 12/28/2024 20:14
Changes: 03/24/2015 12:22 (68), 04/24/2017 13:41 (7), 12/22/2021 07:12 (3), 12/22/2021 07:17 (1), 12/28/2024 20:14 (18)
Complete: 🔍
Cache ID: 216::103

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