CVE-2011-0539

7.5 HIGH
Published: February 10, 2011 Modified: May 29, 2026
View on NVD

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://secunia.com/advisories/43181
Source: secalert@redhat.com
Vendor Advisory
http://secunia.com/advisories/44269
Source: secalert@redhat.com
http://www.openssh.com/txt/legacy-cert.adv
Source: secalert@redhat.com
Patch Vendor Advisory
http://www.securityfocus.com/bid/46155
Source: secalert@redhat.com
http://www.vupen.com/english/advisories/2011/0284
Source: secalert@redhat.com
Vendor Advisory
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10673
Source: af854a3a-2127-422b-91ae-364da2661108
http://secunia.com/advisories/43181
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://secunia.com/advisories/44269
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openssh.com/txt/legacy-cert.adv
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Vendor Advisory
http://www.openwall.com/lists/oss-security/2011/02/04/2
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.securityfocus.com/bid/46155
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.securitytracker.com/id?1025028
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.vupen.com/english/advisories/2011/0284
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/65163
Source: af854a3a-2127-422b-91ae-364da2661108

20 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
2.1%
84th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

openbsd