GLSA 202407-09: OpenSSH: Remote Code Execution

http://security.gentoo.org/

Опасность:	высокая
Заголовок:	OpenSSH: Remote Code Execution
Дата:	01.07.2024
Ошибки:	#935271
ID:	202407-09

Сводка

A vulnerability has been discovered in OpenSSH, which can lead to remote code execution with root privileges.

Назначение

OpenSSH is a free application suite consisting of server and clients that replace tools like telnet, rlogin, rcp and ftp with more secure versions offering additional functionality.

Уязвимые пакеты

Пакет	Уязвимый	Нетронутый	Архитектура(ы)
net-misc/openssh	< 9.7_p1-r6	>= 9.7_p1-r6	All supported architectures

Описание

A vulnerability has been discovered in OpenSSH. Please review the CVE identifier referenced below for details.

Воздействие

A critical vulnerability in sshd(8) was present in Portable OpenSSH versions that may allow arbitrary code execution with root privileges. Successful exploitation has been demonstrated on 32-bit Linux/glibc systems with ASLR. Under lab conditions, the attack requires on average 6-8 hours of continuous connections up to the maximum the server will accept. Exploitation on 64-bit systems is believed to be possible but has not been demonstrated at this time. It's likely that these attacks will be improved upon.

Обход

There is no known workaround at this time. Note that Gentoo has backported the fix to the following versions: net-misc/openssh-9.6_p1-r5 net-misc/openssh-9.7_p1-r6

Решение

All OpenSSH users should upgrade to the latest version and restart the sshd server (to ensure access for new sessions and no vulnerable code keeps running).

          # emerge --sync
          # emerge --ask --oneshot --verbose ">=net-misc/openssh-9.7_p1-r6"

With OpenRC:


          # rc-service sshd restart

With systemd:


          #  systemctl try-restart sshd.service

Ссылки

CVE-2024-6387

Наличие

Этот GLSA и любые обновления для нее доступны для просмотра на сайте Gentoo Security: http://security.gentoo.org/glsa/glsa-202407-09.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.