UnRTF: Buffer overflow

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200501-15 / app-text/unrtf
Release Date	January 10, 2005
Latest Revision	January 10, 2005: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
app-text/unrtf	< 0.19.3-r1	>= 0.19.3-r1	All supported architectures

Related bugreports: #74480

Synopsis

A buffer overflow in UnRTF allows an attacker to execute arbitrary code by way of a specially crafted RTF file.

2. Impact Information

Background

UnRTF is a utility to convert files in the Rich Text Format into other formats.

Description

An unchecked strcat() in unrtf may overflow the bounds of a static buffer.

Impact

Using a specially crafted file, possibly delivered by e-mail or over the web, an attacker may execute arbitrary code with the permissions of the user running UnRTF.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All unrtf users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-text/unrtf-0.19.3-r1"

4. References

Original Announcement

Page updated January 10, 2005

Summary: This is a Gentoo Linux Security Advisory

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