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Gentoo: GLSA-202101-33 High: Sudo Privilege Escalation Risk

gentoo
Calendar Grey January 26, 2021
Dist Gentoo Esm H88
Serious flaws in Gentoo's sudo have been identified, posing risks for privilege escalation. Keep updated on corrective measures.
Multiple vulnerabilities have been found in sudo, the worst of which could result in privilege escalation.

Summary

Multiple vulnerabilities have been discovered in sudo. Please review the CVE identifiers referenced below for details.

Topics%20covered

Topics Covered

security advisory unauthorized access high severity security issue gentoo critical software update privilege escalation sudo

Resolution

All sudo users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-admin/sudo-1.9.5_p2"

References

[ 1 ] CVE-2021-23239 https://nvd.nist.gov/vuln/detail/CVE-2021-23239 [ 2 ] CVE-2021-23240 https://nvd.nist.gov/vuln/detail/CVE-2021-23240 [ 3 ] CVE-2021-3156 https://nvd.nist.gov/vuln/detail/CVE-2021-3156 [ 4 ] Upstream advisory (CVE-2020-23240) [ 5 ] Upstream advisory (CVE-2021-3156)

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202101-33
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Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity: High
Title: sudo: Multiple vulnerabilities
Date: January 26, 2021
Bugs: #764986, #767364
ID: 202101-33

Topics%20covered

Topics Covered

security advisory unauthorized access high severity security issue gentoo critical software update privilege escalation sudo

Synopsis

Multiple vulnerabilities have been found in sudo, the worst of which could result in privilege escalation.

Background

sudo (su "do") allows a system administrator to delegate authority to give certain users (or groups of users) the ability to run some (or all) commands as root or another user while providing an audit trail of the commands and their arguments.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-admin/sudo < 1.9.5_p2 >= 1.9.5_p2

Impact

===== Local users are able to gain unauthorized privileges on the system or determine the existence of files.

Workaround

There is no known workaround at this time.

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