CVE-2015-3405

Description

ntp-keygen in ntp 4.2.8px before 4.2.8p2-RC2 and 4.3.x before 4.3.12 does not generate MD5 keys with sufficient entropy on big endian machines when the lowest order byte of the temp variable is between 0x20 and 0x7f and not #, which might allow remote attackers to obtain the value of generated MD5 keys via a brute force attack with the 93 possible keys.

Predictions

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No vendor mitigations ingested yet for this CVE. The mitigation-content worker queues fetches as references arrive — check back in a few minutes, or see the references list below.

References

• http://bk1.ntp.org/ntp-stable/?PAGE=patch&REV=55199296N2gFqH1Hm5GOnhrk9Ypygg
• http://lists.fedoraproject.org/pipermail/package-announce/2015-April/156248.html
• http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00000.html
• http://rhn.redhat.com/errata/RHSA-2015-1459.html
• http://rhn.redhat.com/errata/RHSA-2015-2231.html
• http://www.debian.org/security/2015/dsa-3223
• http://www.debian.org/security/2015/dsa-3388
• http://www.openwall.com/lists/oss-security/2015/04/23/14
• http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
• http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
• http://www.securityfocus.com/bid/74045
• https://bugs.ntp.org/show_bug.cgi?id=2797
• https://bugzilla.redhat.com/show_bug.cgi?id=1210324
• https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03886en_us
• https://security-tracker.debian.org/tracker/CVE-2015-3405

CWEs

CWE-331

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