CVE-2015-3405

HIGH

ntp <4.2.8p2-RC2, <4.3.12 - Info Disclosure

Title source: llm
STIX 2.1

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.

Scores

CVSS v3 7.5
EPSS 0.1656
EPSS Percentile 94.9%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-331
Status published
Products (26)
debian/debian_linux 7.0
debian/debian_linux 8.0
fedoraproject/fedora 21
ntp/ntp 4.2.8 p1 (3 CPE variants)
ntp/ntp 4.3.0
ntp/ntp 4.3.1
ntp/ntp 4.3.2
ntp/ntp 4.3.3
ntp/ntp 4.3.4
ntp/ntp 4.3.5
... and 16 more
Published Aug 09, 2017
Tracked Since Feb 18, 2026