CVE-2019-19882 Privilege escalation in n/a
Local attackers can escalate privileges to root via misconfigured setuid account management tools in shadow utilities on specific Linux distributions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-19882?
CVE-2019-19882 is a high-severity vulnerability in n/a, published on 18 Dec 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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).
Weakness: CWE-732
Which versions are affected by CVE-2019-19882?
It affects 1 product.
Products include Shadow Project Shadow.
How do I fix CVE-2019-19882?
Change a configuration setting.
Is CVE-2019-19882 being exploited?
There is no known exploitation of CVE-2019-19882 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2019-19882, GHSA-x9jp-6hm9-x2xg.