High severity · published Feb 10, 2011
CVE-2011-0539
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…
7.5
CVSS
1.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.8% · higher than 79% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
Openssh · Openbsd
5.6; 5.7 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2011-0539
CVE.org
https://www.cve.org/CVERecord?id=CVE-2011-0539
h20000.www2.hp.com
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02794777
kb.juniper.net
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10673
Vendor Advisory
http://secunia.com/advisories/43181
secunia.com
http://secunia.com/advisories/44269
Patch
http://www.openssh.com/txt/legacy-cert.adv
www.openwall.com
http://www.openwall.com/lists/oss-security/2011/02/04/2
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