Alerts This Week
Warning Icon 1 535
Alerts This Week
Warning Icon 1 535

Mageia 7: 2020-0246 Critical: Sudo Security Issue - Restriction Bypass

mageia
Calendar Grey June 10, 2020
Dist Mageia Esm H88
Recent updates to sudo packages in Mageia tackle critical security vulnerabilities associated with user impersonation. Find out more!
Updated sudo packages fix security vulnerabilities: It was found that sudo always allowed commands to be run with unknown user or group ids if the sudo configuration allowed it fo...

Summary

Updated sudo packages fix security vulnerabilities:
It was found that sudo always allowed commands to be run with unknown user or group ids if the sudo configuration allowed it for example via the "ALL" alias. This could allow sudo to impersonate non-existent account and depending on how applications are configured, could lead to certain restriction bypass. This is now explicitly disabled. A new setting called "allow_unknown_runas_id" was introduced in order to enable this (CVE-2019-19232).
When an account is disabled via the shadow file, by replacing the password hash with "!", it is not considered disabled by sudo. And depending on the configuration, sudo can be run by using such disabled account (CVE-2019-19234).
The sudo package has been updated to version 1.8.31p1, fixing these issues and other bugs.

References

- https://bugs.mageia.org/show_bug.cgi?id=26314

- https://www.cve.org/CVERecord?id=CVE-2019-19232

- https://www.cve.org/CVERecord?id=CVE-2019-19234

- - https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/IY6DZ7WMDKU4ZDML6MJLDAPG42B5WVUC/

- https://www.cve.org/CVERecord?id=CVE-2019-19232

- https://www.cve.org/CVERecord?id=CVE-2019-19233

- https://www.cve.org/CVERecord?id=CVE-2019-19234

Resolution

SRPMS

- 7/core/sudo-1.8.31p1-1.1.mga7

Severity
critical
Lowest
Low
Medium
High
Critical

Publication date: 10 Jun 2020
URL: https://advisories.mageia.org/MGASA-2020-0246.html
Type: security
CVE: CVE-2019-19232, CVE-2019-19233, CVE-2019-19234

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Related News

Your message here