CVE-2011-0539

HighCVSS 7.5/10Last modified Jun 16, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-264CWE-457

Affected software

No affected versions have been published.

Timeline

Published
Feb 10, 2011
Last modified
Jun 16, 2026
NVD status
Modified

Related CVEs from 2011

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CVE-2011-0539: High severity, CVSS 7.5 | Vulnix