CVE-2019-19882

https://notcve.org/view.php?id=CVE-2019-19882

shadow 4.8, in certain circumstances affecting at least Gentoo, Arch Linux, and Void Linux, allows local users to obtain root access because setuid programs are misconfigured. Specifically, this affects shadow 4.8 when compiled using --with-libpam but without explicitly passing --disable-account-tools-setuid, and without a PAM configuration suitable for use with setuid account management tools. This combination leads to account management tools (groupadd, groupdel, groupmod, useradd, userdel, usermod) that can easily be used by unprivileged local users to escalate privileges to root in multiple ways. This issue became much more relevant in approximately December 2019 when an unrelated bug was fixed (i.e., the chmod calls to suidusbins were fixed in the upstream Makefile which is now included in the release version 4.8). shadow versión 4.8, en determinadas circunstancias que afectan al menos a Gentoo, Arch Linux y Void Linux, permite a usuarios locales conseguir acceso root porque los programas setuid están configurados inapropiadamente. Específicamente, esto afecta a shadow versión 4.8 cuando se compila usando --with-libpam pero sin pasar explícitamente --disable-account-tools-setuid, y sin una configuración PAM adecuada para utilizar con herramientas de administración de cuentas setuid. • https://bugs.archlinux.org/task/64836 https://bugs.gentoo.org/702252 https://github.com/shadow-maint/shadow/commit/edf7547ad5aa650be868cf2dac58944773c12d75 https://github.com/shadow-maint/shadow/pull/199 https://github.com/void-linux/void-packages/pull/17580 https://security.gentoo.org/glsa/202008-09 • CWE-732: Incorrect Permission Assignment for Critical Resource •