- Detalji os-a: WN7
- Važnost: IMP
- Operativni sustavi: U
- Kategorije: HPQ
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SUPPORT COMMUNICATION – SECURITY BULLETIN
Document ID: c04084148
HPSBUX02960 SSRT101419 rev.1 – HP-UX Running NTP, Remote Denial of Service
NOTICE: The information in this Security Bulletin should be acted upon as
soon as possible.
Release Date: 2014-01-13
Last Updated: 2014-01-13
Potential Security Impact: Remote Denial of Service (DoS), execution of
Source: Hewlett-Packard Company, HP Software Security Response Team
A potential security vulnerability has been identified with HP-UX running
NTP. The vulnerability could be exploited remotely to create a Denial of
References: CVE-2013-5211 (SSRT101419)
SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
HP-UX B.11.31 running NTP version 4.2.6.
CVSS 2.0 Base Metrics
Reference Base Vector Base Score
CVE-2013-5211 (AV:N/AC:L/Au:N/C:N/I:N/A:P) 5.0
Information on CVSS is documented
in HP Customer Notice: HPSN-2008-002
HP has provided the following workaround to temporarily resolve this
vulnerability. This bulletin will be revised when a General Release patch is
MANUAL ACTIONS: Yes
To prevent the “monlist” DoS vulnerability, configure the following:
Verify the NTPv4 version.
ntpd 4.2.6 Revision 0.0 Tue Nov 5 14:21:22 UTC 2012
Modify the ntp.conf on your time server and add the following.
# Block all control queries from external systems, allows time services
restrict default noquery
# Allow local queries
Cycle the ntpd daemon.
Verification of the workaround.
Test on the local time server using the “ntpq -p” command.
Verify proper operation with output similar to:
remote refid st t when poll reach delay offset disp
*LOCAL(1) .LOCL. 6 l 13 16 377 0.000 0.000 0.233
On a remote time client, execute ntpdc or xntpdc as follows
# ntpdc -c monlist server.name.with.restrict
A timeout error should occur.
# xntpdc -c monlist xyz.hp.com
xyz.hp.com: timed out, nothing received
***Request timed out
Version:1 (rev.1) – 13 January 2014 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
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