GLSA 200410-11: tiff: Buffer overflows in image decoding

http://security.gentoo.org/

Опасность:	средняя
Заголовок:	tiff: Buffer overflows in image decoding
Дата:	13.10.2004
Ошибки:
ID:	200410-11

Сводка

Multiple heap-based overflows have been found in the tiff library image decoding routines, potentially allowing to execute arbitrary code with the rights of the user viewing a malicious image.

Назначение

The tiff library contains encoding and decoding routines for the Tag Image File Format. It is called by numerous programs, including GNOME and KDE, to help in displaying TIFF images. xv is a multi-format image manipulation utility that is statically linked to the tiff library.

Уязвимые пакеты

Пакет	Уязвимый	Нетронутый	Архитектура(ы)
media-libs/tiff	< 3.6.1-r2	>= 3.6.1-r2	All supported architectures
media-gfx/xv	<= 3.10a-r7	>= 3.10a-r8	All supported architectures

Описание

Chris Evans found heap-based overflows in RLE decoding routines in tif_next.c, tif_thunder.c and potentially tif_luv.c.

Воздействие

A remote attacker could entice a user to view a carefully crafted TIFF image file, which would potentially lead to execution of arbitrary code with the rights of the user viewing the image. This affects any program that makes use of the tiff library, including GNOME and KDE web browsers or mail readers.

Обход

There is no known workaround at this time.

Решение

All tiff library users should upgrade to the latest version:

    # emerge sync

    # emerge -pv ">=media-libs/tiff-3.6.1-r2"
    # emerge ">=media-libs/tiff-3.6.1-r2"

xv makes use of the tiff library and needs to be recompiled to receive the new patched version of the library. All xv users should also upgrade to the latest version:


    # emerge sync

    # emerge -pv ">=media-gfx/xv-3.10a-r8"
    # emerge ">=media-gfx/xv-3.10a-r8"

Ссылки

CAN-2004-0803

Наличие

Этот GLSA и любые обновления для нее доступны для просмотра на сайте Gentoo Security: http://security.gentoo.org/glsa/glsa-200410-11.xml

Опасения?

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