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CVE-2011-0539
CVE information
Published
Last Modified
CVSSv2.0 Severity
Impact Analysis
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..
CVSSv2.0 Score
- Severity
- Medium
- Base Score
- 5/10
- Exploit Score
- 10/10
- Access Vector
- Network
- Access Complexity
- Low
- Authentication Required
- None
- Impact Score
- 2.9/10
- Confidentiality Impact
- Partial
- Availability Impact
- None
- Integrity Impact
- None
Products Affected
| CPE | Affected | Vulnerable | Excluding | Edit |
|---|---|---|---|---|
| cpe:2.3:a:openbsd:openssh:5.7:*:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:a:openbsd:openssh:5.6:*:*:*:*:*:*:* |
Yes
|
- | - |
References
- http://www.openssh.com/txt/legacy-cert.adv
- http://www.securitytracker.com/id?1025028
- http://www.securityfocus.com/bid/46155
- http://secunia.com/advisories/43181
- http://www.openwall.com/lists/oss-security/2011/02/04/2
- http://www.vupen.com/english/advisories/2011/0284
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02794777
- http://secunia.com/advisories/44269
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10673
- https://exchange.xforce.ibmcloud.com/vulnerabilities/65163