(Debian Issues Fix) Freesweep Buffer Overflows Let Local Users Obtain 'games' Group Privileges
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SecurityTracker Alert ID: 1007830 |
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SecurityTracker URL: http://securitytracker.com/id/1007830
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CVE Reference:
CAN-2003-0828
(Links to External Site)
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Date: Sep 29 2003
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Impact:
Execution of arbitrary code via local system, User access via local system
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Fix Available: Yes Vendor Confirmed: Yes
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Description:
Some buffer overflow vulnerabilities were reported in the Freesweep game software. A local user may be able to obtain elevated privileges on the system.
It is reported that a local user can set certain environment variables to a specially crafted value and then invoke freesweep to execute arbitrary code. Because freesweep is configured with set group id (setgid) 'games' group privileges, a local user can obtain 'games' group privileges.
From code inspection, it appears that the HOME and USER environment variables are affected.
Steve Kemp is credited with discovery.
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Impact:
A local user can execute arbitrary code with 'games' group privileges.
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Solution:
Debian has released a fix for the current stable distribution (woody) in version 0.88-4woody1. A fix for the unstable distribution (sid) is to be available soon.
Debian GNU/Linux 3.0 alias woody:
Source archives:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1.dsc
Size/MD5 checksum: 604 3b4fcb708f68923f54b4e6e9a75cdf2f
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1.diff.gz
Size/MD5 checksum: 23476 8aa97d3f8d182be549621937a1de34a7
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88.orig.tar.gz
Size/MD5 checksum: 72711 cfcbe96ee572d4e737da3166f20c3f85
Alpha architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_alpha.deb
Size/MD5 checksum: 41584 a80ee65d7609074a5fd0bb72a89d35c8
ARM architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_arm.deb
Size/MD5 checksum: 35648 42e0fea755cf1de15b96b6441bbca232
Intel IA-32 architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_i386.deb
Size/MD5 checksum: 35920 f4d5a64504e5f47aecd81178826c9386
Intel IA-64 architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_ia64.deb
Size/MD5 checksum: 49758 b85c448dc51c6abf177287064e458ec2
HP Precision architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_hppa.deb
Size/MD5 checksum: 40832 da4299857ed94f24e99581fc8aa7c55b
Motorola 680x0 architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_m68k.deb
Size/MD5 checksum: 33690 edf0a457199e07e44c3c7b787ab50466
Big endian MIPS architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_mips.deb
Size/MD5 checksum: 37940 2a33af6b5b6fc76e67708768492d4e10
Little endian MIPS architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_mipsel.deb
Size/MD5 checksum: 37982 3a106328946d6115590228df1112e8b3
PowerPC architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_powerpc.deb
Size/MD5 checksum: 36332 03da264cc52ea053cfa19c96ee0a56dd
IBM S/390 architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_s390.deb
Size/MD5 checksum: 36576 25ba7c0f70f83c2081b7b47a74b3b579
Sun Sparc architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_sparc.deb
Size/MD5 checksum: 38638 f59794b6e93379516b6a2b979b4a2db8
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Vendor URL: www.debian.org/security/ (Links to External Site)
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Cause:
Boundary error
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Underlying OS:
Linux (Debian)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Sun, 28 Sep 2003 10:15:24 -0400
Subject: [SECURITY] [DSA-391-1] New freesweep packages fix buffer overflow
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
- --------------------------------------------------------------------------
Debian Security Advisory DSA 391-1 security@debian.org
http://www.debian.org/security/ Matt Zimmerman
September 28th, 2003 http://www.debian.org/security/faq
- --------------------------------------------------------------------------
Package : freesweep
Vulnerability : buffer overflow
Problem-Type : local
Debian-specific: no
CVE Ids : CAN-2003-0828
Steve Kemp discovered a buffer overflow in freesweep, when processing
several environment variables. This vulnerability could be exploited
by a local user to gain gid 'games'.
For the current stable distribution (woody) this problem has been fixed
in version 0.88-4woody1.
For the unstable distribution (sid) this problem will be fixed soon.
We recommend that you update your freesweep package.
Upgrade Instructions
- --------------------
wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.
If you are using the apt-get package manager, use the line for
sources.list as given below:
apt-get update
will update the internal database
apt-get upgrade
will install corrected packages
You may use an automated update by adding the resources from the
footer to the proper configuration.
Debian GNU/Linux 3.0 alias woody
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Source archives:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1.dsc
Size/MD5 checksum: 604 3b4fcb708f68923f54b4e6e9a75cdf2f
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1.diff.gz
Size/MD5 checksum: 23476 8aa97d3f8d182be549621937a1de34a7
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88.orig.tar.gz
Size/MD5 checksum: 72711 cfcbe96ee572d4e737da3166f20c3f85
Alpha architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_alpha.deb
Size/MD5 checksum: 41584 a80ee65d7609074a5fd0bb72a89d35c8
ARM architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_arm.deb
Size/MD5 checksum: 35648 42e0fea755cf1de15b96b6441bbca232
Intel IA-32 architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_i386.deb
Size/MD5 checksum: 35920 f4d5a64504e5f47aecd81178826c9386
Intel IA-64 architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_ia64.deb
Size/MD5 checksum: 49758 b85c448dc51c6abf177287064e458ec2
HP Precision architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_hppa.deb
Size/MD5 checksum: 40832 da4299857ed94f24e99581fc8aa7c55b
Motorola 680x0 architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_m68k.deb
Size/MD5 checksum: 33690 edf0a457199e07e44c3c7b787ab50466
Big endian MIPS architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_mips.deb
Size/MD5 checksum: 37940 2a33af6b5b6fc76e67708768492d4e10
Little endian MIPS architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_mipsel.deb
Size/MD5 checksum: 37982 3a106328946d6115590228df1112e8b3
PowerPC architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_powerpc.deb
Size/MD5 checksum: 36332 03da264cc52ea053cfa19c96ee0a56dd
IBM S/390 architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_s390.deb
Size/MD5 checksum: 36576 25ba7c0f70f83c2081b7b47a74b3b579
Sun Sparc architecture:
http://security.debian.org/pool/updates/main/f/freesweep/freesweep_0.88-4woody1_sparc.deb
Size/MD5 checksum: 38638 f59794b6e93379516b6a2b979b4a2db8
These files will probably be moved into the stable distribution on
its next revision.
- ---------------------------------------------------------------------------------
For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>
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