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Gentoo: UUDeview Buffer overflow vulnerability Print E-mail
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Posted by LinuxSecurity.com Team   
Gentoo By decoding a MIME archive with excessively long strings for various parameters, it is possible to crash UUDeview, or cause it to execute arbitrary code.

Gentoo Linux Security Advisory                           GLSA 200403-05
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~                                             http://security.gentoo.org
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~  Severity: Normal
~     Title: UUDeview MIME Buffer Overflow
~      Date: March 26, 2004
~      Bugs: #44859
~        ID: 200403-05

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Synopsis
========

A specially-crafted MIME file (.mim, .uue, .uu, .b64, .bhx, .hqx, and
.xxe extensions) may cause UUDeview to crash or execute arbitrary code.

Background
==========

UUDeview is a program which is used to transmit binary files over the
Internet in a text-only format. It is commonly used for email and Usenet
attachments. It supports multiple encoding formats, including Base64,
BinHex and UUEncoding.

Description
===========

By decoding a MIME archive with excessively long strings for various
parameters, it is possible to crash UUDeview, or cause it to execute
arbitrary code.

This vulnerability was originally reported by iDEFENSE as part of a
WinZip advisory [ Reference: 1 ].

Impact
======

An attacker could create a specially-crafted MIME file and send it via
email. When recipient decodes the file, UUDeview may execute arbitrary
code which is embedded in the MIME file, thus granting the attacker
access to the recipient's account.

Workaround
==========

All users should upgrade to UUDeview 0.5.20:

~    # emerge sync
~    # emerge -pv ">=app-text/uudeview-0.5.20"
~    # emerge ">=app-text/uudeview-0.5.20"

References
==========

~  [ 1 ]  http://www.idefense.com/application/poi/display?id=76
~  [ 2 ]  http://www.securityfocus.com/bid/9758

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at 
http://bugs.gentoo.org.

 
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