Vulnerability Details CVE-2015-3405
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.062
EPSS Ranking 90.4%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
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
- 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
Products affected by CVE-2015-3405
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cpe:2.3:a:ntp:ntp:4.2.8
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cpe:2.3:a:ntp:ntp:4.3.0
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cpe:2.3:a:ntp:ntp:4.3.1
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cpe:2.3:a:ntp:ntp:4.3.10
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cpe:2.3:a:ntp:ntp:4.3.11
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cpe:2.3:a:ntp:ntp:4.3.2
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cpe:2.3:a:ntp:ntp:4.3.3
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cpe:2.3:a:ntp:ntp:4.3.4
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cpe:2.3:a:ntp:ntp:4.3.5
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cpe:2.3:a:ntp:ntp:4.3.6
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cpe:2.3:a:ntp:ntp:4.3.7
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cpe:2.3:a:ntp:ntp:4.3.8
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cpe:2.3:a:ntp:ntp:4.3.9
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cpe:2.3:o:debian:debian_linux:7.0
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cpe:2.3:o:debian:debian_linux:8.0
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cpe:2.3:o:fedoraproject:fedora:21
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cpe:2.3:o:opensuse:suse_linux_enterprise_server:11.0
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cpe:2.3:o:opensuse_project:suse_linux_enterprise_desktop:11.0
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cpe:2.3:o:redhat:enterprise_linux_desktop:6.0
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cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:6.0
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cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian:6.0
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cpe:2.3:o:redhat:enterprise_linux_for_scientific_computing:6.0
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cpe:2.3:o:redhat:enterprise_linux_server:6.0
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cpe:2.3:o:redhat:enterprise_linux_server_from_rhui_6:6.0
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cpe:2.3:o:redhat:enterprise_linux_workstation:6.0
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cpe:2.3:o:suse:suse_linux_enterprise_server:11.0