Vulnerability identifier: #VU72719

Vulnerability risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-27320

CWE-ID: CWE-415

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 escalate privileges on the system.

The vulnerability exists due to a boundary error when matching a sudoers rule that contains a per-command chroot directive (CHROOT=dir). A local user can trigger a double free error and execute arbitrary code with elevated privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Sudo: 1.9.8 - 1.9.13p1

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External links
http://www.sudo.ws/releases/stable/#1.9.13p2
http://www.openwall.com/lists/oss-security/2023/02/28/1
http://www.openwall.com/lists/oss-security/2023/03/01/8

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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.