SUSE update for keylime

1) Improper Authentication

EUVDB-ID: #VU80467

Risk: Low

CVSSv4.0: 0.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-38201

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a local user to bypass authentication.

The vulnerability exists due to an error in the challenge-response protocol implementation during agent registration. A local user can  impersonate an agent and hide the true status of a monitored machine if the fake agent is added to the verifier list by a legitimate user, resulting in a breach of the integrity of the registrar database.

Mitigation

Update the affected package keylime to the latest version.

Vulnerable software versions

Basesystem Module: 15-SP4 - 15-SP5

SUSE Linux Enterprise Server for SAP Applications 15: SP4 - SP5

SUSE Linux Enterprise Server 15: SP4 - SP5

SUSE Linux Enterprise Real Time 15: SP4 - SP5

SUSE Linux Enterprise High Performance Computing 15: SP4 - SP5

SUSE Linux Enterprise Desktop 15: SP4 - SP5

openSUSE Leap: 15.4 - 15.5

SUSE Manager Retail Branch Server: 4.3

SUSE Manager Server: 4.3

SUSE Manager Proxy: 4.3

keylime-firewalld: before 6.3.2-150400.4.20.1

keylime-logrotate: before 6.3.2-150400.4.20.1

keylime-registrar: before 6.3.2-150400.4.20.1

keylime-verifier: before 6.3.2-150400.4.20.1

python3-keylime: before 6.3.2-150400.4.20.1

keylime-tpm_cert_store: before 6.3.2-150400.4.20.1

keylime-agent: before 6.3.2-150400.4.20.1

keylime-config: before 6.3.2-150400.4.20.1

CPE2.3

• cpe:2.3:o:suse:basesystem_module:15-SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:basesystem_module:15-SP5:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications_15:SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications_15:SP5:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_15:SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_15:SP5:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_real_time_15:SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_real_time_15:SP5:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_15:SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_15:SP5:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_desktop_15:SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:opensuse_leap:15.4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_manager_retail_branch_server:4.3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_manager_server:4.3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_manager_proxy:4.3:*:*:*:*:*:*:*
• cpe:2.3:a:suse:keylime-firewalld:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:keylime-logrotate:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:keylime-registrar:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:keylime-verifier:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:python3-keylime:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:keylime-tpm_cert_store:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:keylime-agent:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:keylime-config:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2023/suse-su-20233525-1/

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.