GLSA 200601-17: Xpdf, Poppler, GPdf, libextractor, pdftohtml: Heap overflows

http://security.gentoo.org/

Опасность:	средняя
Заголовок:	Xpdf, Poppler, GPdf, libextractor, pdftohtml: Heap overflows
Дата:	30.01.2006
Ошибки:	#117481, #117494, #117495, #115789, #118665
ID:	200601-17

Сводка

Xpdf, Poppler, GPdf, libextractor and pdftohtml are vulnerable to integer overflows that may be exploited to execute arbitrary code.

Назначение

Xpdf is a PDF file viewer that runs under the X Window System. Poppler is a PDF rendering library based on the Xpdf 3.0 code base. GPdf is a PDF file viewer for the GNOME 2 platform, also based on Xpdf. libextractor is a library which includes Xpdf code to extract arbitrary meta-data from files. pdftohtml is a utility to convert PDF files to HTML or XML formats that makes use of Xpdf code to decode PDF files.

Уязвимые пакеты

Пакет	Уязвимый	Нетронутый	Архитектура(ы)
app-text/xpdf	< 3.01-r5	>= 3.01-r5	All supported architectures
app-text/poppler	< 0.4.3-r4	>= 0.4.3-r4	All supported architectures
app-text/gpdf	< 2.10.0-r3	>= 2.10.0-r3	All supported architectures
media-libs/libextractor	< 0.5.9	>= 0.5.9	All supported architectures
app-text/pdftohtml	< 0.36-r4		All supported architectures

Описание

Chris Evans has reported some integer overflows in Xpdf when attempting to calculate buffer sizes for memory allocation, leading to a heap overflow and a potential infinite loop when handling malformed input files.

Воздействие

By sending a specially crafted PDF file to a victim, an attacker could cause an overflow, potentially resulting in the execution of arbitrary code with the privileges of the user running the application.

Обход

There is no known workaround at this time.

Решение

All Xpdf users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-text/xpdf-3.01-r5"

All Poppler users should upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-text/poppler-0.4.3-r4"

All GPdf users should upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-text/gpdf-2.10.0-r3"

All libextractor users should upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-libs/libextractor-0.5.9"

All pdftohtml users should migrate to the latest stable version of Poppler.

Ссылки

Наличие

Этот GLSA и любые обновления для нее доступны для просмотра на сайте Gentoo Security: http://security.gentoo.org/glsa/glsa-200601-17.xml

Опасения?

Безопасность является одной из главных задач Gentoo Linux и первостепенное значение обеспечить конфиденциальность и безопасность машин наших пользователей. Любые соображения безопасности должны быть адресованы security@gentoo.org или в качестве альтернативы, вы можете сообщить об ошибке на https://bugs.gentoo.org.