GNU Sharutils shar Command Line Parsing Buffer Overflow Vulnerability

BID:10066

Info

GNU Sharutils shar Command Line Parsing Buffer Overflow Vulnerability

Bugtraq ID: 10066
Class: Boundary Condition Error
CVE: CVE-2004-1772
Remote: No
Local: Yes
Published: Apr 06 2004 12:00AM
Updated: Feb 22 2007 06:06PM
Credit: Disclosure of this issue is credited to Shaun Colley <[email protected]>.
Vulnerable: Ubuntu Ubuntu Linux 4.1 ppc
Ubuntu Ubuntu Linux 4.1 ia64
Ubuntu Ubuntu Linux 4.1 ia32
SGI ProPack 3.0
Redhat Fedora Core3
Redhat Fedora Core2
Redhat Enterprise Linux WS 4
Redhat Enterprise Linux WS 3
Redhat Enterprise Linux WS 2.1 IA64
Redhat Enterprise Linux WS 2.1
Redhat Enterprise Linux ES 4
Redhat Enterprise Linux ES 3
Redhat Enterprise Linux ES 2.1 IA64
Redhat Enterprise Linux ES 2.1
Redhat Enterprise Linux AS 4
Redhat Enterprise Linux AS 3
Redhat Enterprise Linux AS 2.1 IA64
Redhat Enterprise Linux AS 2.1
Redhat Desktop 4.0
Redhat Desktop 3.0
Redhat Advanced Workstation for the Itanium Processor 2.1 IA64
Redhat Advanced Workstation for the Itanium Processor 2.1
GNU sharutils 4.2.1
+ Gentoo Linux 1.4 _rc3
 + Gentoo Linux 1.4 _rc2
 + Gentoo Linux 1.4 _rc1
 + Gentoo Linux 1.4
+ HP Secure OS software for Linux 1.0
+ MandrakeSoft Corporate Server 3.0 x86_64
 + MandrakeSoft Corporate Server 3.0
+ MandrakeSoft Corporate Server 2.1 x86_64
 + MandrakeSoft Corporate Server 2.1
+ Mandriva Linux Mandrake 10.1 x86_64
 + Mandriva Linux Mandrake 10.1
+ Mandriva Linux Mandrake 10.0 AMD64
 + Mandriva Linux Mandrake 10.0
+ Redhat Fedora Core3
 + Redhat Linux 7.2 ia64
 + Redhat Linux 7.2 i386
 + Redhat Linux 7.1 ia64
 + Redhat Linux 7.1 i386
 + Redhat Linux 7.1 alpha
 + Redhat Linux 7.0 i386
 + Redhat Linux 7.0 alpha
 + Redhat Linux 6.2 sparc
 + Redhat Linux 6.2 i386
 + Redhat Linux 6.2 alpha
 + Turbolinux Appliance Server 1.0 Workgroup Edition
 + Turbolinux Appliance Server 1.0 Hosting Edition
 + Turbolinux Appliance Server Hosting Edition 1.0
+ Turbolinux Appliance Server Workgroup Edition 1.0
+ Turbolinux Home
+ Turbolinux Turbolinux 10 F...
 + Turbolinux Turbolinux Desktop 10.0
+ Turbolinux Turbolinux Server 8.0
+ Turbolinux Turbolinux Server 7.0
+ Turbolinux Turbolinux Workstation 8.0
+ Turbolinux Turbolinux Workstation 7.0
+ Ubuntu Ubuntu Linux 4.1 ppc
 + Ubuntu Ubuntu Linux 4.1 ia64
 + Ubuntu Ubuntu Linux 4.1 ia32
 Avaya S8710 R2.0.1
Avaya S8710 R2.0.0
Avaya S8700 R2.0.1
Avaya S8700 R2.0.0
Avaya S8500 R2.0.1
Avaya S8500 R2.0.0
Avaya S8300 R2.0.1
Avaya S8300 R2.0.0
Avaya Modular Messaging (MSS) 2.0
Avaya Modular Messaging (MSS) 1.1
Avaya MN100
Avaya Intuity LX
Avaya Converged Communications Server 2.0
Not Vulnerable:

Discussion

GNU Sharutils shar Command Line Parsing Buffer Overflow Vulnerability

The 'shar' utility is reported prone to a command line parsing buffer-overflow vulnerability when parsing commands. This issue occurs because the utility fails to properly validate the size of user-supplied strings before copying them to a finite buffer.

Note that 'shar' is not in itself a setuid or setgid application. However, an application that is setuid or setgid may invoke this utility with user-supplied arguments.

Successful exploitation would immediately produce a denial-of-service condition in the affected process. Attackers may also leverage this issue to execute code on the affected system with the privileges of the user that invoked the vulnerable application.

Exploit / POC

GNU Sharutils shar Command Line Parsing Buffer Overflow Vulnerability

Currently we are not aware of any exploits for this issue. If you feel we are in error or if you are aware of more recent information, please mail us at: mailto:[email protected].

Solution / Fix

GNU Sharutils shar Command Line Parsing Buffer Overflow Vulnerability

Solution:
Please see the referenced advisories for more information.


GNU sharutils 4.2.1

References

GNU Sharutils shar Command Line Parsing Buffer Overflow Vulnerability

References:
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