Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title libssh: Arbitrary code execution
Informations
Name GLSA-201402-26 First vendor Publication 2014-02-21
Vendor Gentoo Last vendor Modification 2014-02-21
Severity (Vendor) Normal 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:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

Multiple vulnerabilities have been found in libssh, allowing attackers to execute arbitrary code or cause Denial of Service.

Background

libssh is a C library providing SSHv2 and SSHv1.

Description

Multiple buffer overflow, double free, and integer overflow vulnerabilities have been discovered in libssh.

Impact

A remote attacker could possibly execute arbitrary code with the privileges of the process or cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All libssh users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-libs/libssh-0.5.3"

References

[ 1 ] CVE-2012-4559 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4559
[ 2 ] CVE-2012-4560 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4560
[ 3 ] CVE-2012-4561 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4561
[ 4 ] CVE-2012-4562 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4562
[ 5 ] CVE-2012-6063 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6063

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-201402-26.xml

Original Source

Url : http://security.gentoo.org/glsa/glsa-201402-26.xml

CWE : Common Weakness Enumeration

% Id Name
50 % CWE-399 Resource Management Errors
25 % CWE-189 Numeric Errors (CWE/SANS Top 25)
25 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:17817
 
Oval ID: oval:org.mitre.oval:def:17817
Title: DSA-2577-1 libssh - several
Description: Multiple vulnerabilities were discovered in libssh by Florian Weimer and Xi Wang:
Family: unix Class: patch
Reference(s): DSA-2577-1
CVE-2012-4559
CVE-2012-4561
CVE-2012-4562
CVE-2012-6063
Version: 7
Platform(s): Debian GNU/Linux 6.0
Debian GNU/kFreeBSD 6.0
Product(s): libssh
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:17868
 
Oval ID: oval:org.mitre.oval:def:17868
Title: USN-1640-1 -- libssh vulnerabilities
Description: linssh could be made to crash or run programs if it received specially crafted network traffic.
Family: unix Class: patch
Reference(s): USN-1640-1
CVE-2012-4559
CVE-2012-4560
CVE-2012-4561
CVE-2012-4562
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 7

OpenVAS Exploits

Date Description
2012-12-10 Name : Fedora Update for libssh FEDORA-2012-18687
File : nvt/gb_fedora_2012_18687_libssh_fc16.nasl
2012-12-04 Name : Debian Security Advisory DSA 2577-1 (libssh)
File : nvt/deb_2577_1.nasl
2012-12-04 Name : Mandriva Update for libssh MDVSA-2012:175 (libssh)
File : nvt/gb_mandriva_MDVSA_2012_175.nasl
2012-11-29 Name : Fedora Update for libssh FEDORA-2012-18677
File : nvt/gb_fedora_2012_18677_libssh_fc17.nasl
2012-11-29 Name : Ubuntu Update for libssh USN-1640-1
File : nvt/gb_ubuntu_USN_1640_1.nasl

Nessus® Vulnerability Scanner

Date Description
2014-06-13 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2012-836.nasl - Type : ACT_GATHER_INFO
2014-06-13 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2012-840.nasl - Type : ACT_GATHER_INFO
2014-02-23 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201402-26.nasl - Type : ACT_GATHER_INFO
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
2013-01-25 Name : The remote SuSE 11 host is missing a security update.
File : suse_11_libssh2-121120.nasl - Type : ACT_GATHER_INFO
2012-12-07 Name : The remote Slackware host is missing a security update.
File : Slackware_SSA_2012-341-02.nasl - Type : ACT_GATHER_INFO
2012-12-07 Name : The remote Fedora host is missing a security update.
File : fedora_2012-18687.nasl - Type : ACT_GATHER_INFO
2012-12-03 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-2577.nasl - Type : ACT_GATHER_INFO
2012-11-30 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2012-175.nasl - Type : ACT_GATHER_INFO
2012-11-29 Name : The remote Fedora host is missing a security update.
File : fedora_2012-18677.nasl - Type : ACT_GATHER_INFO
2012-11-27 Name : The remote Fedora host is missing a security update.
File : fedora_2012-18610.nasl - Type : ACT_GATHER_INFO
2012-11-27 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-1640-1.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
Date Informations
2014-02-23 13:21:10
  • Multiple Updates
2014-02-21 21:19:27
  • First insertion