SUSE update for sudo

1) Heap-based buffer overflow

EUVDB-ID: #VU50040

Risk: Low

CVSSv4.0: 8.5 [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:A/U:Clear]

CVE-ID: CVE-2021-3156

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: Yes

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in sudo. A local user can pass specially crafted data to the application, trigger heap-based buffer overflow and execute arbitrary code on the target system with root privileges.

Mitigation

Update the affected package sudo to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP2-BCL - 12-SP2-LTSS-ERICSSON

SUSE Linux Enterprise Server for SAP: 12-SP2

SUSE OpenStack Cloud: 7

sudo-debugsource: before 1.8.10p3-10.32.1

sudo-debuginfo: before 1.8.10p3-10.32.1

sudo: before 1.8.10p3-10.32.1

CPE2.3

• cpe:2.3:o:suse:suse_linux_enterprise_server:12-SP2-BCL:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server:12-SP2-LTSS-ERICSSON:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap:12-SP2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_openstack_cloud:7:*:*:*:*:*:*:*
• cpe:2.3:a:suse:sudo-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:sudo-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:sudo:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20210928-1/

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?

Yes. This vulnerability is being exploited in the wild.