GLSA 200406-20: FreeS/WAN, Openswan, strongSwan: Vulnerabilities in certificate handling

http://security.gentoo.org/

Опасность:	средняя
Заголовок:	FreeS/WAN, Openswan, strongSwan: Vulnerabilities in certificate handling
Дата:	25.06.2004
Ошибки:
ID:	200406-20

Сводка

FreeS/WAN, Openswan, strongSwan and Super-FreeS/WAN contain two bugs when authenticating PKCS#7 certificates. This could allow an attacker to authenticate with a fake certificate.

Назначение

FreeS/WAN, Openswan, strongSwan and Super-FreeS/WAN are Open Source implementations of IPsec for the Linux operating system. They are all based on the discontinued FreeS/WAN project.

Уязвимые пакеты

Пакет	Уязвимый	Нетронутый	Архитектура(ы)
net-misc/freeswan	< 2.04-r1	>= 2.04-r1	All supported architectures
net-misc/openswan	< 2.1.4	>= 2.1.4	All supported architectures
net-misc/strongswan	< 2.1.3	>= 2.1.3	All supported architectures
net-misc/super-freeswan	<= 1.99.7.3		All supported architectures

Описание

All these IPsec implementations have several bugs in the verify_x509cert() function, which performs certificate validation, that make them vulnerable to malicious PKCS#7 wrapped objects.

Воздействие

With a carefully crafted certificate payload an attacker can successfully authenticate against FreeS/WAN, Openswan, strongSwan or Super-FreeS/WAN, or make the daemon go into an endless loop.

Обход

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

Решение

All FreeS/WAN 1.9x users should upgrade to the latest stable version:

    # emerge sync
    
    # emerge -pv "=net-misc/freeswan-1.99-r1"
    # emerge "=net-misc/freeswan-1.99-r1"

All FreeS/WAN 2.x users should upgrade to the latest stable version:


    # emerge sync
    
    # emerge -pv ">=net-misc/freeswan-2.04-r1"
    # emerge ">=net-misc/freeswan-2.04-r1"

All Openswan 1.x users should upgrade to the latest stable version:


    # emerge sync
    
    # emerge -pv "=net-misc/openswan-1.0.6_rc1"
    # emerge "=net-misc/openswan-1.0.6_rc1"

All Openswan 2.x users should upgrade to the latest stable version:


    # emerge sync
    
    # emerge -pv ">=net-misc/openswan-2.1.4"
    # emerge ">=net-misc/openswan-2.1.4"

All strongSwan users should upgrade to the latest stable version:


    # emerge sync
    
    # emerge -pv ">=net-misc/strongswan-2.1.3"
    # emerge ">=net-misc/strongswan-2.1.3"

All Super-FreeS/WAN users should migrate to the latest stable version of Openswan. Note that Portage will force a move for Super-FreeS/WAN users to Openswan.


    # emerge sync
    
    # emerge -pv "=net-misc/openswan-1.0.6_rc1"
    # emerge "=net-misc/openswan-1.0.6_rc1"

Ссылки

Наличие

Этот GLSA и любые обновления для нее доступны для просмотра на сайте Gentoo Security: http://security.gentoo.org/glsa/glsa-200406-20.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.