NTP 'ntp-keygen.c' Predictable Random Number Generator Weakness

BID:74045

CVE-2015-3405 |

Info

NTP 'ntp-keygen.c' Predictable Random Number Generator Weakness

Bugtraq ID: 74045
Class: Design Error
CVE: CVE-2015-3405
Remote: Yes
Local: No
Published: Apr 10 2015 12:00AM
Updated: Jul 05 2016 10:18PM
Credit: Martin Prpic
Vulnerable: Oracle Linux 0
Oracle Enterprise Linux 6.2
Oracle Enterprise Linux 6
Debian Linux 6.0 sparc
Debian Linux 6.0 s/390
Debian Linux 6.0 powerpc
Debian Linux 6.0 mips
Debian Linux 6.0 ia-64
Debian Linux 6.0 ia-32
Debian Linux 6.0 arm
Debian Linux 6.0 amd64
Not Vulnerable:

Discussion

NTP 'ntp-keygen.c' Predictable Random Number Generator Weakness

NTP is prone to a predictable random number generator weakness.

An attacker can exploit this issue to guess generated MD5 keys that could then be used to spoof an NTP client or server.

Exploit / POC

NTP 'ntp-keygen.c' Predictable Random Number Generator Weakness

An attacker can exploit this issue using readily available tools.

Solution / Fix

NTP 'ntp-keygen.c' Predictable Random Number Generator Weakness

Solution:
Updates are available. Please see the references or vendor advisory for more information.

References

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