Turbolinux Security Announcement: esound
Jun 21, 2001, 20:19 (1 Talkback[s])
Date: Thu, 21 Jun 2001 11:13:41 -0700 (PDT)
From: TurboLinux Security Team <security@www1.turbolinux.com>
Subject: [TL-Security-Announce] TLSA2001029 esound-0.2.22-1
_________________________________________________________________________
Turbolinux Security Announcement
Package: esound
Vulnerable Packages: All Turbolinux versions previous to 0.2.22-1
Date: 06/21/2001 5:00 PDT
Affected Turbolinux platforms: TL 6.1 Workstation,
All Turbolinux versions
6.0.5 and earlier
Turbolinux Advisory ID#: TLSA2001029
Reference: http://www.securityfocus.com/bid/1659
_________________________________________________________________________
A security hole has been discovered in the package esound. Please update
this package in your installation as soon as possible.
_________________________________________________________________________
1. Problem Summary
Esound creates a world-writable directory called /tmp/.esd, which
is owned by the user running esound. It stores a socket which is shared
by the programs using esound. When esound is started, the socket becomes
world-writable. During this time, it is possible for an attacker to cre-
ate a symbolic link in /tmp/.esd to a file owned by the esound user and
make that file world-writable.
2. Impact
Any file owned by the esound user can be overwritten.
3. Solution
Update the package from our ftp server by running the following command:
rpm -Uvh ftp_path_to_filename
Where ftp_path_to_filename is the following:
ftp://ftp.turbolinux.com/pub/updates/6.0/security/esound-0.2.22-1.i386.rpm
ftp://ftp.turbolinux.com/pub/updates/6.0/security/esound-devel-0.2.22-1.i386.rpm
The source RPM can be downloaded here:
ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/esound-0.2.22-1.src.rpm
**Note: You must rebuild and install the RPM if you choose to download
and install the SRPM. Simply installing the SRPM alone WILL NOT CLOSE
THE SECURITY HOLE.
In order to properly rebuild the esound binaries, make sure
you have the package "audiofile-devel" installed on your system.
Please verify the MD5 checksums of the updates before you install:
MD5 sum Package Name
_________________________________________________________________________
08543da5d8212492755a9913a650b26e esound-0.2.22-1.i386.rpm
e3ae1c4b06ed465d30ff960d30146e51 esound-devel-0.2.22-1.i386.rpm
1756ffc8c1cc4a8d9bb0abae187fc14f esound-0.2.22-1.src.rpm
_________________________________________________________________________
These packages are GPG signed by Turbolinux for security. Our key
is available here:
http://www.turbolinux.com/security/tlgpgkey.asc
To verify a package, use the following command:
rpm --checksig name_of_rpm
To examine only the md5sum, use the following command:
md5sum name_of_rpm
**Note: Checking GPG keys requires RPM 3.0 or higher.
_________________________________________________________________________
You can find more updates on our ftp server:
ftp://ftp.turbolinux.com/pub/updates/6.0/security/
for TL6.x Workstation and Server security updates
Our webpage for security announcements:
http://www.turbolinux.com/security
If you want to report vulnerabilities, please contact:
security@turbolinux.com
_________________________________________________________________________
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