MIME-tools: Virus detection evasion

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200411-06 / MIME-tools
Release Date	November 02, 2004
Latest Revision	May 22, 2006: 02
Impact	low
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
dev-perl/MIME-tools	< 5.415	>= 5.415	All supported architectures

Related bugreports: #69181

Synopsis

MIME-tools doesn't handle empty MIME boundaries correctly. This may prevent some virus-scanning programs which use MIME-tools from detecting certain viruses.

2. Impact Information

Background

MIME-tools is a Perl module containing functions to handle MIME attachments.

Description

MIME-tools doesn't correctly parse attachment boundaries with an empty name (boundary="").

Impact

An attacker could send a carefully crafted email and evade detection on some email virus-scanning programs using MIME-tools for attachment decoding.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All MIME-tools users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-perl/MIME-tools-5.415"

4. References

Page updated November 02, 2004

Summary: This is a Gentoo Linux Security Advisory

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