CVE-2015-3405

high

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.

References

Advisories
More

https://bugzilla.redhat.com/show_bug.cgi?id=1210324

https://bugs.ntp.org/show_bug.cgi?id=2797

http://www.securityfocus.com/bid/74045

http://www.openwall.com/lists/oss-security/2015/04/23/14

http://www.debian.org/security/2015/dsa-3388

http://www.debian.org/security/2015/dsa-3223

http://rhn.redhat.com/errata/RHSA-2015-2231.html

http://rhn.redhat.com/errata/RHSA-2015-1459.html

http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00000.html

http://lists.fedoraproject.org/pipermail/package-announce/2015-April/156248.html

http://bk1.ntp.org/ntp-stable/?PAGE=patch&REV=55199296N2gFqH1Hm5GOnhrk9Ypygg

https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03886en_us

http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html

http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html

Details

Source: Mitre, NVD

Published: 2017-08-09

Updated: 2025-04-20

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Severity: High

EPSS

EPSS: 0.06205