CVE-2019-19882 Detail

Current 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).


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  7.8 HIGH
Vector:  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H


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Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://bugs.archlinux.org/task/64836 Exploit  Third Party Advisory 
https://bugs.gentoo.org/702252 Exploit  Third Party Advisory 
https://github.com/shadow-maint/shadow/commit/edf7547ad5aa650be868cf2dac58944773c12d75 Patch  Third Party Advisory 
https://github.com/shadow-maint/shadow/pull/199 Patch  Third Party Advisory 
https://github.com/void-linux/void-packages/pull/17580 Patch  Third Party Advisory 
https://security.gentoo.org/glsa/202008-09

Weakness Enumeration

CWE-ID CWE Name Source
CWE-732 Incorrect Permission Assignment for Critical Resource cwe source acceptance level NIST  

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Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-19882
NVD Published Date:
12/18/2019
NVD Last Modified:
08/25/2020
Source:
MITRE