(HP Issues Fix for HP-UX) ntp Bugs Let Remote Users Deny Service, Obtain Potentially Sensitive Information, and Bypass Access Controls in Certain Cases
SecurityTracker Alert ID: 1031790|
SecurityTracker URL: http://securitytracker.com/id/1031790
(Links to External Site)
Date: Feb 24 2015
Denial of service via network, Disclosure of system information, Disclosure of user information|
Fix Available: Yes Vendor Confirmed: Yes |
Version(s): prior to 4.2.8p1|
Two vulnerabilities were reported in ntp. A remote user can cause denial of service conditions. A remote user can obtain potentially sensitive information. A remote user can bypass access controls in certain cases.|
A remote user can send a specially crafted 'vallen' parameter value to trigger a validation flaw in 'ntp_crypto.c' and obtain potentially sensitive information or cause the target ntpd service to crash [CVE-2014-9750].
Stephen Roettger of the Google Security Team, Sebastian Krahmer of the SUSE Security Team, and Harlan Stenn of Network Time Foundation reported this vulnerability.
A remote user may be able to spoof the ::1 source address via IPv6 to bypass IPv6-based access controls [CVE-2014-9751]. Some operating systems are affected, including Apple OS X and Linux.
Stephen Roettger of the Google Security Team reported this vulnerability.
A remote user can cause denial of service conditions.|
A remote user can obtain potentially sensitive information.
A remote user can bypass access controls in certain cases.
HP has issued a fix for HP-UX.|
The HP advisory is available at:
Vendor URL: support.ntp.org/bin/view/Main/SecurityNotice#vallen_is_not_validated_in_sever (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|
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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.22.214.171.124.0 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.126.96.36.199.0 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
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PI = Printing and Imaging
PV = ProCurve
ST = Storage Software
TU = Tru64 UNIX
UX = HP-UX
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