Qt: Image loader overflows

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200408-20 / Qt
Release Date	August 22, 2004
Latest Revision	May 22, 2006: 02
Impact	normal
Exploitable	local

Package	Vulnerable versions	Unaffected versions	Architecture(s)
x11-libs/qt	<= 3.3.2	>= 3.3.3	All supported architectures

Related bugreports: #60855

Synopsis

There are several bugs in Qt's image-handling code which could lead to crashes or arbitrary code execution.

2. Impact Information

Background

Qt is a cross-platform GUI toolkit used by KDE.

Description

There are several unspecified bugs in the QImage class which may cause crashes or allow execution of arbitrary code as the user running the Qt application. These bugs affect the PNG, XPM, BMP, GIF and JPEG image types.

Impact

An attacker may exploit these bugs by causing a user to open a carefully-constructed image file in any one of these formats. This may be accomplished through e-mail attachments (if the user uses KMail), or by simply placing a malformed image on a website and then convicing the user to load the site in a Qt-based browser (such as Konqueror).

3. Resolution Information

Workaround

There is no known workaround at this time. All users are encouraged to upgrade to the latest available version of Qt.

Resolution

All Qt users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge sync

# emerge -pv ">=x11-libs/qt-3.3.3"
# emerge ">=x11-libs/qt-3.3.3"

4. References

Page updated August 22, 2004

Summary: This is a Gentoo Linux Security Advisory

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