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Category:   OS (UNIX)  >   HP-UX Vendors:   HPE
HP-UX 'pppoec' Access Permission Flaw Lets Local Users Gain Root Privileges
SecurityTracker Alert ID:  1032746
SecurityTracker URL:
CVE Reference:   CVE-2015-2126   (Links to External Site)
Date:  Jun 30 2015
Impact:   Root access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 11iv2, 11iv3
Description:   A vulnerability was reported in HP-UX 'pppoec'. A local user can obtain root privileges on the target system.

The '/usr/bin/pppoec' utility does not have proper file access permissions. A local user can invoke the utility to execute arbitrary commands on the target system with root privileges.

Impact:   A local user can obtain root privileges on the target system.
Solution:   The vendor has described a configuration fix in their advisory.

The vendor's advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Access control error

Message History:   None.

 Source Message Contents

Subject:  [security bulletin] HPSBUX03359 rev.1 - HP-UX pppoec, local elevation of privilege

Hash: SHA1

Note: the current version of the following document is available here:


Document ID: c04718530
Version: 1

HPSBUX03359 rev.1 - HP-UX pppoec, local elevation of privilege

NOTICE: The information in this Security Bulletin should be acted upon as
soon as possible.

Release Date: 2015-06-26
Last Updated: 2015-06-26

Potential Security Impact: Elevation of privilege

Source: Hewlett-Packard Company, HP Software Security Response Team

A potential security vulnerability has been identified with the HP-UX pppoec
utility. The vulnerability could be exploited in allowing a local user to
elevate their privilege.




SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.

HP-UX 11iv2, 11iv3


CVSS 2.0 Base Metrics
  Reference              Base Vector             Base Score
CVE-2015-2126    (AV:L/AC:L/Au:S/C:C/I:C/A:C)       6.8
             Information on CVSS is documented
            in HP Customer Notice: HPSN-2008-002


HP has provided the following work around for HP-UX 11iv2 & 11iv3.

A non-root user on the HP-UX 11iv2 & 11iv3 system can exploit the "pppoec"
utility due to its access permissions.

Until the official fix for the issue is released, HP recommends the following
workaround be applied to avoid any misuse of the pppoec utility.

Make sure that the /usr/bin/pppoec is executed by root user. Unset the "s"
bit of the "pppoec" utility.

The command used to unset the "s" bit is as follows.
# /usr/bin/chmod u-s /usr/bin/pppoec

Note: On HP-UX 11iv2, /usr/bin/pppoec utility will not be available by
default. Hence take above action only if /usr/bin/pppoec file is available.

MANUAL ACTIONS: # /usr/bin/chmod u-s /usr/bin/pppoec

Version:1 (rev.1) - 26 June 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

Report: To report a potential security vulnerability with any HP supported
product, send Email to:

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alerts via Email:

Security Bulletin Archive: A list of recently released Security Bulletins is
available here:

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
MU = Multi-Platform Software
NS = NonStop Servers
OV = OpenVMS
PI = Printing and Imaging
PV = ProCurve
ST = Storage Software
TU = Tru64 UNIX

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.

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