CVE-2011-0539 | BDVDB-2026-45056 Detail
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.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact none, availability impact none. Attack vector: network.
Weaknesses#
- CWE-457 Use of Uninitialized Variable
References#
- http://www.openwall.com/lists/oss-security/2011/02/04/2
- http://www.securitytracker.com/id?1025028
- http://www.securityfocus.com/bid/46155
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10673
- http://www.vupen.com/english/advisories/2011/0284
- http://secunia.com/advisories/43181
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02794777
- http://secunia.com/advisories/44269
- http://www.openssh.com/txt/legacy-cert.adv
- https://exchange.xforce.ibmcloud.com/vulnerabilities/65163
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.