Ubuntu update for sudo



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-27320
CWE-ID CWE-415
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

sudo (Ubuntu package)
Operating systems & Components / Operating system package or component

sudo-ldap (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Double Free

EUVDB-ID: #VU72719

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-27320

CWE-ID: CWE-415 - Double Free

Exploit availability: No

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

Update the affected package sudo to the latest version.

Vulnerable software versions

Ubuntu: 22.04 - 22.10

sudo (Ubuntu package): before 1.9.9-1ubuntu2.3

sudo-ldap (Ubuntu package): before 1.9.9-1ubuntu2.3

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5908-1


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.



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