GLSA 200501-31: teTeX, pTeX, CSTeX: Multiple vulnerabilities

http://security.gentoo.org/

Опасность:	средняя
Заголовок:	teTeX, pTeX, CSTeX: Multiple vulnerabilities
Дата:	23.01.2005
Ошибки:	#75801
ID:	200501-31

Сводка

teTeX, pTeX and CSTeX make use of vulnerable Xpdf code which may allow the remote execution of arbitrary code. Furthermore, the xdvizilla script is vulnerable to temporary file handling issues.

Назначение

teTeX is a complete and open source TeX distribution. CSTeX is another TeX distribution including Czech and Slovak support. pTeX is another alternative that allows Japanese publishing with TeX. xdvizilla is an auxiliary script used to integrate DVI file viewing in Mozilla-based browsers.

Уязвимые пакеты

Пакет	Уязвимый	Нетронутый	Архитектура(ы)
app-text/tetex	< 2.0.2-r5	>= 2.0.2-r5	All supported architectures
app-text/cstetex	< 2.0.2-r1	>= 2.0.2-r1	All supported architectures
app-text/ptex	< 3.1.4-r2	>= 3.1.4-r2	All supported architectures

Описание

teTeX, pTeX and CSTeX all make use of Xpdf code and may therefore be vulnerable to the various overflows that were discovered in Xpdf code (CAN-2004-0888, CAN-2004-0889, CAN-2004-1125 and CAN-2005-0064). Furthermore, Javier Fernandez-Sanguino Pena discovered that the xdvizilla script does not handle temporary files correctly.

Воздействие

An attacker could design a malicious input file which, when processed using one of the TeX distributions, could lead to the execution of arbitrary code. Furthermore, a local attacker could create symbolic links in the temporary files directory, pointing to a valid file somewhere on the filesystem. When xdvizilla is called, this would result in the file being overwritten with the rights of the user running the script.

Обход

There is no known workaround at this time.

Решение

All teTeX users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-text/tetex-2.0.2-r5"

All CSTeX users should also upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-text/cstetex-2.0.2-r1"

Finally, all pTeX users should upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-text/ptex-3.1.4-r2"

Ссылки

Наличие

Этот GLSA и любые обновления для нее доступны для просмотра на сайте Gentoo Security: http://security.gentoo.org/glsa/glsa-200501-31.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.