CVE-2011-0539

NameCVE-2011-0539
DescriptionThe 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
openssh (PTS)stretch1:7.4p1-10+deb9u7fixed
stretch (security)1:7.4p1-10+deb9u6fixed
buster1:7.9p1-10+deb10u2fixed
buster (security)1:7.9p1-10+deb10u1fixed
bullseye, sid1:8.4p1-4fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
opensshsourcelenny(not affected)
opensshsourcesqueeze(not affected)
opensshsource(unstable)1:5.8p1-2

Notes

[squeeze] - openssh <not-affected> (Only affects OpenSSH 5.6 and 5.7)
[lenny] - openssh <not-affected> (Only affects OpenSSH 5.6 and 5.7)

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