Vulnerability identifier: #VU23783

Vulnerability risk: Low

CVSSv3.1: 3 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-19232

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Sudo
Client/Desktop applications / Software for system administration

Vendor: Sudo

Description

The vulnerability allows a local user to impersonate nonexistent users.

The vulnerability exists in sudo due to incorrect processing of numeric uids that are not associated with any existing user account. A local user with access to a Runas ALL sudoer accountcan impersonate a a nonexistent user.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Sudo: 1.8.0 - 1.8.29

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External links
http://www.sudo.ws/devel.html#1.8.30b2
http://www.sudo.ws/stable.html

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.