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Vulnerability Details : CVE-2012-4559

Multiple double free vulnerabilities in the (1) agent_sign_data function in agent.c, (2) channel_request function in channels.c, (3) ssh_userauth_pubkey function in auth.c, (4) sftp_parse_attr_3 function in sftp.c, and (5) try_publickey_from_file function in keyfiles.c in libssh before 0.5.3 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors.
Publish Date : 2012-11-30 Last Update Date : 2017-08-29
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of ServiceExecute Code
CWE ID 399

- Related OVAL Definitions

Title Definition Id Class Family
DSA-2577-1 libssh - several oval:org.mitre.oval:def:17817 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2012-4559

# Product Type Vendor Product Version Update Edition Language
1 Application Libssh Libssh * * * * Version Details Vulnerabilities
2 Application Libssh Libssh 0.4.7 * * * Version Details Vulnerabilities
3 Application Libssh Libssh 0.4.8 * * * Version Details Vulnerabilities
4 Application Libssh Libssh 0.5.0 * * * Version Details Vulnerabilities
5 Application Libssh Libssh 0.5.0 RC1 * * Version Details Vulnerabilities
6 Application Libssh Libssh 0.5.1 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Libssh Libssh 6

- References For CVE-2012-4559
FEDORA FEDORA-2012-18677
SUSE openSUSE-SU-2013:0130
XF libssh-code-execution(80218)
FEDORA FEDORA-2012-18610
SUSE openSUSE-SU-2012:1620
BID 56604 libssh Multiple Buffer Overflow and Denial of Service Vulnerabilities Release Date:2014-02-25
SUSE openSUSE-SU-2012:1622
MLIST [oss-security] 20121120 libssh 0.5.3 release fixes multiple security issues

- Metasploit Modules Related To CVE-2012-4559

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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