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openSUSE-SU-2018:0667-1

Опубликовано: 12 мар. 2018
Источник: suse-cvrf

Описание

Security update for shadow

This update for shadow fixes the following issues:

  • CVE-2018-7169: Fixed an privilege escalation in newgidmap, which allowed an unprivileged user to be placed in a user namespace where setgroups(2) is allowed. (bsc#1081294)

This update was imported from the SUSE:SLE-12-SP2:Update update project.

Список пакетов

openSUSE Leap 42.3
shadow-4.2.1-13.1

Ссылки

Описание

An issue was discovered in shadow 4.5. newgidmap (in shadow-utils) is setuid and allows an unprivileged user to be placed in a user namespace where setgroups(2) is permitted. This allows an attacker to remove themselves from a supplementary group, which may allow access to certain filesystem paths if the administrator has used "group blacklisting" (e.g., chmod g-rwx) to restrict access to paths. This flaw effectively reverts a security feature in the kernel (in particular, the /proc/self/setgroups knob) to prevent this sort of privilege escalation.

Затронутые продукты
openSUSE Leap 42.3:shadow-4.2.1-13.1
Ссылки