Executive Summary

Summary
Title libssh vulnerability
Informations
Name USN-1707-1 First vendor Publication 2013-01-28
Vendor Ubuntu Last vendor Modification 2013-01-28
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:N/I:N/A:P)
Cvss Base Score 4.3 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 12.10 - Ubuntu 12.04 LTS - Ubuntu 11.10 - Ubuntu 10.04 LTS

Summary:

libssh could be made to crash if it received specially crafted network traffic.

Software Description: - libssh: A tiny C SSH library

Details:

Yong Chuan Koh discovered that libssh incorrectly handled certain negotiation requests. A remote attacker could use this to cause libssh to crash, resulting in a denial of service.

Update instructions:

The problem can be corrected by updating your system to the following package versions:

Ubuntu 12.10:
libssh-4 0.5.2-1ubuntu0.12.10.2

Ubuntu 12.04 LTS:
libssh-4 0.5.2-1ubuntu0.12.04.2

Ubuntu 11.10:
libssh-4 0.5.2-1ubuntu0.11.10.2

Ubuntu 10.04 LTS:
libssh-4 0.4.2-1ubuntu1.2

In general, a standard system update will make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-1707-1
CVE-2013-0176

Package Information:
https://launchpad.net/ubuntu/+source/libssh/0.5.2-1ubuntu0.12.10.2
https://launchpad.net/ubuntu/+source/libssh/0.5.2-1ubuntu0.12.04.2
https://launchpad.net/ubuntu/+source/libssh/0.5.2-1ubuntu0.11.10.2
https://launchpad.net/ubuntu/+source/libssh/0.4.2-1ubuntu1.2

Original Source

Url : http://www.ubuntu.com/usn/USN-1707-1

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-399 Resource Management Errors

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:18304
 
Oval ID: oval:org.mitre.oval:def:18304
Title: USN-1707-1 -- libssh vulnerability
Description: libssh could be made to crash if it received specially crafted network traffic.
Family: unix Class: patch
Reference(s): USN-1707-1
CVE-2013-0176
 Version: 7
Platform(s): Ubuntu 12.10
Ubuntu 12.04
Ubuntu 11.10
Ubuntu 10.04
 Product(s): libssh
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 9

Nessus® Vulnerability Scanner

Date Description
2013-04-20 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2013-045.nasl - Type : ACT_GATHER_INFO
2013-03-29 Name : The remote Slackware host is missing a security update.
File : Slackware_SSA_2013-087-01.nasl - Type : ACT_GATHER_INFO
2013-02-11 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2013-009.nasl - Type : ACT_GATHER_INFO
2013-02-04 Name : The remote Fedora host is missing a security update.
File : fedora_2013-1407.nasl - Type : ACT_GATHER_INFO
2013-02-04 Name : The remote Fedora host is missing a security update.
File : fedora_2013-1422.nasl - Type : ACT_GATHER_INFO
2013-01-29 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-1707-1.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
2
3
Date Informations
2014-02-17 12:01:25
  • Multiple Updates
2013-02-07 21:22:02
  • Multiple Updates
2013-02-06 21:22:18
  • Multiple Updates
2013-01-28 21:17:39
  • First insertion