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 7.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02794777
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10673
- http://secunia.com/advisories/43181Vendor Advisory
- http://secunia.com/advisories/44269
- http://www.openssh.com/txt/legacy-cert.advPatch, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2011/02/04/2
- http://www.securityfocus.com/bid/46155
- http://www.securitytracker.com/id?1025028
- http://www.vupen.com/english/advisories/2011/0284Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/65163
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02794777
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10673
- http://secunia.com/advisories/43181Vendor Advisory
- http://secunia.com/advisories/44269
- http://www.openssh.com/txt/legacy-cert.advPatch, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2011/02/04/2
- http://www.securityfocus.com/bid/46155
- http://www.securitytracker.com/id?1025028
- http://www.vupen.com/english/advisories/2011/0284Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/65163
Timeline
- Published
- Feb 10, 2011
- Last modified
- Jun 16, 2026
- NVD status
- Modified