HP-UX 'pppoec' Access Permission Flaw Lets Local Users Gain Root Privileges
SecurityTracker Alert ID: 1032746|
SecurityTracker URL: http://securitytracker.com/id/1032746
(Links to External Site)
Date: Jun 30 2015
Root access via local system|
Fix Available: Yes Vendor Confirmed: Yes |
Version(s): 11iv2, 11iv3|
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.
A local user can obtain root privileges on the target system.|
The vendor has described a configuration fix in their advisory.|
The vendor's advisory is available at:
Vendor URL: h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04718530 (Links to External Site)
Access control error|
Source Message Contents
Subject: [security bulletin] HPSBUX03359 rev.1 - HP-UX pppoec, local elevation of privilege|
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Note: the current version of the following document is available here:
SUPPORT COMMUNICATION - SECURITY BULLETIN
Document ID: c04718530
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.
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