openEuler 22.03 LTS update for sudo

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

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS

sudo-help: before 1.9.8p2-10

sudo-debugsource: before 1.9.8p2-10

sudo-debuginfo: before 1.9.8p2-10

sudo-devel: before 1.9.8p2-10

sudo: before 1.9.8p2-10

CPE2.3

• cpe:2.3:o:openeuler:openeuler:22.03:LTS:*:*:*:*:*:*
• cpe:2.3:a:openeuler:sudo-help:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:sudo-debugsource:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:sudo-debuginfo:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:sudo-devel:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:sudo:*:*:*:*:*:openeuler:*:*

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1172

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.