Date: Mon, 20 Mar 2000 08:41:13 -0800
From: Aleph One <[email protected]>
To: [email protected]Subject: Security Bulletins Digest
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Digest Name: Daily Security Bulletins Digest
Created: Mon Mar 20 3:00:03 PST 2000
Table of Contents:
Document ID Title
--------------- -----------
HPSBUX0002-108 Sec. Vulnerability with Aserver (revised 02)
The documents are listed below.
-------------------------------------------------------------------------------
Document ID: HPSBUX0002-108
Date Loaded: 20000319
Title: Sec. Vulnerability with Aserver (revised 02)
-------------------------------------------------------------------------
**REVISED 02** HEWLETT-PACKARD COMPANY SECURITY ADVISORY: #00108, 01 Jan 2000
Last Revised: 17 March, 2000
-------------------------------------------------------------------------
The information in the following Security Advisory should be acted upon
as soon as possible. Hewlett-Packard Company will not be liable for any
consequences to any customer resulting from customer's failure to fully
implement instructions in this Security Advisory as soon as possible.
-------------------------------------------------------------------------
PROBLEM: /opt/audio/bin/Aserver can be used to gain root access.
PLATFORM: HP9000 Series 7/800 running HP-UX releases 10.X and 11.X
DAMAGE: Root access is possible.
SOLUTION: **REVISED 02** Change the Aserver permissions.
AVAILABILITY: This advisory will be updated when patches are available.
CHANGE SUMMARY: This revision contains revised permission recommendations.
-------------------------------------------------------------------------
I.
A. Background
A procedure to use /opt/audio/bin/Aserver to gain root access
has been made public.
B. Recommended solution
**REVISED 01** | The need for suid permissions is being reviewed.
| The only requirement for suid currently identified
| is to allow any user to force a restart of the Aserver.
| This feature may be eventually be removed. Until a
| patch is available the recommended solution, as root
| is:
| chmod 555 /opt/audio/bin/Aserver
**REVISED 02** || Until a patch is available that fixes the problem
|| installing an Aserver patch will restore the original
|| permissions. It is safer to set the 555 permissions
|| each time the system is started. One way to do that
|| is to create /sbin/rc2.d/S769audio with 555 permissions
|| containing the following script:
||
||#!/sbin/sh
||
||PATH=/sbin:/usr/sbin:/usr/bin
||export PATH
||
||case $1 in
||start_msg)
|| echo "chmod 555 /opt/audio/bin/Aserver"
|| ;;
||
||'start')
|| chmod 555 /opt/audio/bin/Aserver
|| ;;
||
||*)
|| echo "usage: $0 start"
|| ;;
||esac
||
||exit 0
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________________________________________________________________________
-----End of Document ID: HPSBUX0002-108--------------------------------------
