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CVE-2019-19232

7.5 · HIGH

In Sudo through 1.8.29, an attacker with access to a Runas ALL sudoer account can impersonate a nonexistent user by invoking sudo with a numeric uid that is not associated with any user.

Published Dec 19, 2019EPSS 3.29%

Overview

CVE-2019-19232 is a high-severity vulnerability. It was published on December 19, 2019 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In Sudo through 1.8.29, an attacker with access to a Runas ALL sudoer account can impersonate a nonexistent user by invoking sudo with a numeric uid that is not associated with any user. NOTE: The software maintainer believes that this is not a vulnerability because running a command via sudo as a user not present in the local password database is an intentional feature. Because this behavior surprised some users, sudo 1.8.30 introduced an option to enable/disable this behavior with the default being disabled. However, this does not change the fact that sudo was behaving as intended, and as documented, in earlier versions

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refseclists.org/fulldisclosure/2020/Mar/31Refaccess.redhat.com/security/cve/cve-2019-19232Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I6TKF36KOQUVJNBHSVJFA7BU3CCEYD2F/Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IY6DZ7WMDKU4ZDML6MJLDAPG42B5WVUC/Refquickview.cloudapps.cisco.com/quickview/bug/CSCvs58103Refquickview.cloudapps.cisco.com/quickview/bug/CSCvs58812Refquickview.cloudapps.cisco.com/quickview/bug/CSCvs58979Refquickview.cloudapps.cisco.com/quickview/bug/CSCvs76870Refsecurity.netapp.com/advisory/ntap-20200103-0004/Refsupport.apple.com/en-gb/HT211100

How CyberStrike helps

Frequently asked questions

What is CVE-2019-19232?

CVE-2019-19232 is a high-severity vulnerability. It was published on December 19, 2019 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2019-19232?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2019-19232?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2019-19232?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-19232 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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