Executive Summary

Informations
Name CVE-2011-0539 First vendor Publication 2011-02-10
Vendor Cve Last vendor Modification 2017-08-17

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:N/A:N)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

The key_certify function in usr.bin/ssh/key.c in OpenSSH 5.6 and 5.7, when generating legacy certificates using the -t command-line option in ssh-keygen, does not initialize the nonce field, which might allow remote attackers to obtain sensitive stack memory contents or make it easier to conduct hash collision attacks.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0539

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-264 Permissions, Privileges, and Access Controls

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 2

OpenVAS Exploits

Date Description
2011-02-07 Name : OpenSSH Legacy Certificate Signing Information Disclosure Vulnerability
File : nvt/gb_openssh_46155.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
70873 OpenSSH Legacy Certificates Stack Memory Disclosure

OpenSSH contains a flaw that may lead to an unauthorized information disclosure.  The issue is triggered when the 'key_certify' function in 'usr.bin/ssh/key.c' fails to initialize the nonce field when generating legacy certificates using the -t command-line option in ssh-keygen, which will disclose stack memory contents to a remote attacker, or allow an attacker to conduct hash collision attacks more easily.

Nessus® Vulnerability Scanner

Date Description
2011-02-09 Name : Remote attackers may be able to access sensitive information.
File : openssh_58.nasl - Type : ACT_GATHER_INFO

Sources (Detail)

Source Url
BID http://www.securityfocus.com/bid/46155
CONFIRM http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10673
http://www.openssh.com/txt/legacy-cert.adv
HP http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02794777
MLIST http://www.openwall.com/lists/oss-security/2011/02/04/2
SECTRACK http://www.securitytracker.com/id?1025028
SECUNIA http://secunia.com/advisories/43181
http://secunia.com/advisories/44269
VUPEN http://www.vupen.com/english/advisories/2011/0284
XF https://exchange.xforce.ibmcloud.com/vulnerabilities/65163

Alert History

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2022-10-11 12:12:26
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2021-05-04 12:13:56
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2020-07-25 12:05:51
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2017-08-17 09:23:17
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2014-02-17 11:00:09
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2013-05-10 22:53:58
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