(HP Issues Fix for HP-UX) NTP Uses Weak Default Encryption Key and Weak RNG Seed
SecurityTracker Alert ID: 1031787|
SecurityTracker URL: http://securitytracker.com/id/1031787
(Links to External Site)
Date: Feb 24 2015
Disclosure of system information, Modification of system information|
Fix Available: Yes Vendor Confirmed: Yes |
Version(s): prior to 4.2.7p230|
Two vulnerabilities were reported in NTP. A remote user can access and modify data.|
A remote user with the ability to conduct a man-in-the-middle attack can obtain encrypted data and decrypt it.
When no auth key is specified in the configuration file, the system generates a 31-bit key using a weak randomization function [CVE-2014-9293]. Versions prior to 4.2.7p11 [January 2010] are affected.
Neel Mehta of the Google Security Team reported this vulnerability.
The system uses a week seed for ntp-keygen to genearte symmetric keys [CVE-2014-9294]. Versions prior to 4.2.7p230 are affected [Nov 2011].
Stephen Roettger of the Google Security Team reported this vulnerability.
A remote user can access and modify data.|
HP has issued a fix for HP-UX.|
The HP advisory is available at:
Vendor URL: support.ntp.org/bin/view/Main/SecurityNotice (Links to External Site)
Access control error|
|Underlying OS: UNIX (HP/UX)|
|Underlying OS Comments: 11.23, 11.31|
This archive entry is a follow-up to the message listed below.|
Source Message Contents
Subject: [security bulletin] HPSBUX03240 SSRT101872 rev.1 - HP-UX Running NTP, Remote Execution of Code, Denial of Service (DoS), or Other Vulnerabilties|
-----BEGIN PGP SIGNED MESSAGE-----
Note: the current version of the following document is available here:
SUPPORT COMMUNICATION - SECURITY BULLETIN
Document ID: c04554677
HPSBUX03240 SSRT101872 rev.1 - HP-UX Running NTP, Remote Execution of Code,
Denial of Service (DoS), or Other Vulnerabilties
NOTICE: The information in this Security Bulletin should be acted upon as
soon as possible.
Release Date: 2015-02-18
Last Updated: 2015-02-18
Potential Security Impact: Remote execution of code, Denial of Service (DoS),
or other vulnerabilities
Source: Hewlett-Packard Company, HP Software Security Response Team
Potential security vulnerabilities have been identified with HP-UX running
NTP. These could be exploited remotely to execute code, create a Denial of
Service (DoS), or other vulnerabilities.
CVE-2014-9293 - Insufficient Entropy in Pseudo-Random Number Generator (PRNG)
CVE-2014-9294 - Use of Cryptographically Weak PRNG (CWE-338)
CVE-2014-9295 - Stack Buffer Overflow (CWE-121)
CVE-2014-9296 - Error Conditions, Return Values, Status Codes (CWE-389)
CVE-2014-9297 - Improper Check for Unusual or Exceptional Conditions
SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
HP-UX B.11.31 running NTP version C.18.104.22.168.0 or previous
HP-UX B.11.23 running XNTP version 3.5 or previous
CVSS 2.0 Base Metrics
Reference Base Vector Base Score
CVE-2014-9293 (AV:N/AC:L/Au:N/C:P/I:P/A:P) 7.5
CVE-2014-9294 (AV:N/AC:L/Au:N/C:P/I:P/A:P) 7.5
CVE-2014-9295 (AV:N/AC:L/Au:N/C:P/I:P/A:P) 7.5
CVE-2014-9296 (AV:N/AC:L/Au:N/C:N/I:N/A:P) 5.0
CVE-2014-9297 (AV:N/AC:H/Au:N/C:P/I:N/A:N) 2.6
Information on CVSS is documented
in HP Customer Notice: HPSN-2008-002
HP has provided the following patch for HP-UX B.11.31. A workaround for HP-UX
B.11.23 and B.11.11 to temporarily resolve these vulnerabilities follows
The B.11.31 patch is available from:
ftp://ntp42650:Secure12@h2.usa.hp.com or https://h20392.www2.hp.com/portal/sw
Mitigation steps for HP-UX B.11.23 and B.11.11 for CVE-2014-9295
Restrict query for server status (Time Service is not affected) from
ntpq/ntpdc by enabling .noquery. using the restrict command in /etc/ntp.conf
NOTE: This bulletin will be revised when patches for XNTP v3.5 on B.11.23 and
B.11.11 become available.
MANUAL ACTIONS: No
PRODUCT SPECIFIC INFORMATION
HP-UX Software Assistant: HP-UX Software Assistant is an enhanced application
that replaces HP-UX Security Patch Check. It analyzes all Security Bulletins
issued by HP and lists recommended actions that may apply to a specific HP-UX
system. It can also download patches and create a depot automatically. For
more information see: https://www.hp.com/go/swa
The following text is for use by the HP-UX Software Assistant.
action: install revision C.22.214.171.124.0 or subsequent
END AFFECTED VERSIONS
Version:1 (rev.1) - 18 February 2015 Initial release
Third Party Security Patches: Third party security patches that are to be
installed on systems running HP software products should be applied in
accordance with the customer's patch management policy.
Support: For issues about implementing the recommendations of this Security
Bulletin, contact normal HP Services support channel. For other issues about
the content of this Security Bulletin, send e-mail to email@example.com.
Report: To report a potential security vulnerability with any HP supported
product, send Email to: firstname.lastname@example.org
Subscribe: To initiate a subscription to receive future HP Security Bulletin
alerts via Email:
Security Bulletin Archive: A list of recently released Security Bulletins is
Software Product Category: The Software Product Category is represented in
the title by the two characters following HPSB.
3C = 3COM
3P = 3rd Party Software
GN = HP General Software
HF = HP Hardware and Firmware
MP = MPE/iX
MU = Multi-Platform Software
NS = NonStop Servers
OV = OpenVMS
PI = Printing and Imaging
PV = ProCurve
ST = Storage Software
TU = Tru64 UNIX
UX = HP-UX
Copyright 2015 Hewlett-Packard Development Company, L.P.
Hewlett-Packard Company shall not be liable for technical or editorial errors
or omissions contained herein. The information provided is provided "as is"
without warranty of any kind. To the extent permitted by law, neither HP or
its affiliates, subcontractors or suppliers will be liable for
incidental,special or consequential damages including downtime cost; lost
profits; damages relating to the procurement of substitute products or
services; or damages for loss of data, or software restoration. The
information in this document is subject to change without notice.
Hewlett-Packard Company and the names of Hewlett-Packard products referenced
herein are trademarks of Hewlett-Packard Company in the United States and
other countries. Other product and company names mentioned herein may be
trademarks of their respective owners.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.13 (GNU/Linux)
-----END PGP SIGNATURE-----