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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.
Publish Date : 2017-08-09 Last Update Date : 2018-08-28
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- CVSS Scores & Vulnerability Types

CVSS Score
5.0
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 331

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2015:1459: ntp security, bug fix, and enhancement update (Moderate) oval:com.redhat.rhsa:def:20151459 unix
RHSA-2015:2231: ntp security, bug fix, and enhancement update (Moderate) oval:com.redhat.rhsa:def:20152231 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2015-3405

# Product Type Vendor Product Version Update Edition Language
1 OS Debian Debian Linux 7.0 Version Details Vulnerabilities
2 OS Debian Debian Linux 8.0 Version Details Vulnerabilities
3 OS Fedoraproject Fedora 21 Version Details Vulnerabilities
4 Application NTP NTP 4.2.8 P1 Version Details Vulnerabilities
5 Application NTP NTP 4.2.8 P2 Version Details Vulnerabilities
6 Application NTP NTP 4.2.8 P2 Rc1 Version Details Vulnerabilities
7 Application NTP NTP 4.3.0 Version Details Vulnerabilities
8 Application NTP NTP 4.3.1 Version Details Vulnerabilities
9 Application NTP NTP 4.3.2 Version Details Vulnerabilities
10 Application NTP NTP 4.3.3 Version Details Vulnerabilities
11 Application NTP NTP 4.3.4 Version Details Vulnerabilities
12 Application NTP NTP 4.3.5 Version Details Vulnerabilities
13 Application NTP NTP 4.3.6 Version Details Vulnerabilities
14 Application NTP NTP 4.3.7 Version Details Vulnerabilities
15 Application NTP NTP 4.3.8 Version Details Vulnerabilities
16 Application NTP NTP 4.3.9 Version Details Vulnerabilities
17 Application NTP NTP 4.3.10 Version Details Vulnerabilities
18 Application NTP NTP 4.3.11 Version Details Vulnerabilities
19 OS Opensuse Suse Linux Enterprise Server 11.0 SP3 Version Details Vulnerabilities
20 OS Opensuse Project Suse Linux Enterprise Desktop 11.0 SP3 Version Details Vulnerabilities
21 OS Redhat Enterprise Linux Desktop 6.0 Version Details Vulnerabilities
22 OS Redhat Enterprise Linux For Ibm Z Systems 6.0 Version Details Vulnerabilities
23 OS Redhat Enterprise Linux For Power Big Endian 6.0 Version Details Vulnerabilities
24 OS Redhat Enterprise Linux For Scientific Computing 6.0 Version Details Vulnerabilities
25 OS Redhat Enterprise Linux Server 6.0 Version Details Vulnerabilities
26 OS Redhat Enterprise Linux Server From Rhui 6 6.0 Version Details Vulnerabilities
27 OS Redhat Enterprise Linux Workstation 6.0 Version Details Vulnerabilities
28 OS Suse Suse Linux Enterprise Server 11.0 SP3 ~~~vmware~~ Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Debian Debian Linux 2
Fedoraproject Fedora 1
NTP NTP 15
Opensuse Suse Linux Enterprise Server 1
Opensuse Project Suse Linux Enterprise Desktop 1
Redhat Enterprise Linux Desktop 1
Redhat Enterprise Linux For Ibm Z Systems 1
Redhat Enterprise Linux For Power Big Endian 1
Redhat Enterprise Linux For Scientific Computing 1
Redhat Enterprise Linux Server 1
Redhat Enterprise Linux Server From Rhui 6 1
Redhat Enterprise Linux Workstation 1
Suse Suse Linux Enterprise Server 1

- References For CVE-2015-3405

http://www.securityfocus.com/bid/74045
BID 74045 NTP 'ntp-keygen.c' Predictable Random Number Generator Weakness Release Date:2016-01-15
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03886en_us CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=1210324 CONFIRM
https://bugs.ntp.org/show_bug.cgi?id=2797 CONFIRM
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html CONFIRM
http://bk1.ntp.org/ntp-stable/?PAGE=patch&REV=55199296N2gFqH1Hm5GOnhrk9Ypygg CONFIRM
http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html CONFIRM
http://rhn.redhat.com/errata/RHSA-2015-1459.html
REDHAT RHSA-2015:1459
http://www.openwall.com/lists/oss-security/2015/04/23/14
MLIST [oss-security] 20150423 Re: CVE request: ntp-keygen may generate non-random symmetric keys on big-endian systems
http://rhn.redhat.com/errata/RHSA-2015-2231.html
REDHAT RHSA-2015:2231
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00000.html
SUSE SUSE-SU-2015:1173
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/156248.html
FEDORA FEDORA-2015-5830
http://www.debian.org/security/2015/dsa-3223
DEBIAN DSA-3223
http://www.debian.org/security/2015/dsa-3388
DEBIAN DSA-3388

- Metasploit Modules Related To CVE-2015-3405

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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