SUSE update for strongswan

1) Improper Certificate Validation

EUVDB-ID: #VU67813

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-40617

CWE-ID: CWE-295 - Improper Certificate Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to an error within the revocation plugin, which uses potentially untrusted OCSP URIs and CRL distribution points (CDP) in certificates. A remote attacker can initiate the IKE_SAs and send crafted certificates that contain URIs pointing to servers under their control. As a result, a remote attacker can perform a denial of service (DoS) attack.

Mitigation

Update the affected package strongswan to the latest version.

Vulnerable software versions

SUSE Enterprise Storage: 7.1

SUSE Manager Retail Branch Server: 4.2

SUSE Linux Enterprise Workstation Extension: 15-SP3

SUSE Linux Enterprise Desktop: 15-SP3

openSUSE Leap: 15.3

SUSE Manager Server: 4.2

SUSE Manager Proxy: 4.2

SUSE Linux Enterprise Server for SAP Applications: 15-SP3

SUSE Linux Enterprise Server: 15-SP3

SUSE Linux Enterprise High Performance Computing: 15-SP3

SUSE Linux Enterprise Module for Packagehub Subpackages: 15-SP3

SUSE Linux Enterprise Module for Basesystem: 15-SP3

strongswan-doc: before 5.8.2-150200.11.30.1

strongswan-sqlite-debuginfo: before 5.8.2-150200.11.30.1

strongswan-sqlite: before 5.8.2-150200.11.30.1

strongswan-nm-debuginfo: before 5.8.2-150200.11.30.1

strongswan-nm: before 5.8.2-150200.11.30.1

strongswan-mysql-debuginfo: before 5.8.2-150200.11.30.1

strongswan-mysql: before 5.8.2-150200.11.30.1

strongswan-libs0-debuginfo: before 5.8.2-150200.11.30.1

strongswan-libs0: before 5.8.2-150200.11.30.1

strongswan-ipsec-debuginfo: before 5.8.2-150200.11.30.1

strongswan-ipsec: before 5.8.2-150200.11.30.1

strongswan-hmac: before 5.8.2-150200.11.30.1

strongswan-debugsource: before 5.8.2-150200.11.30.1

strongswan-debuginfo: before 5.8.2-150200.11.30.1

strongswan: before 5.8.2-150200.11.30.1

CPE2.3

• cpe:2.3:o:suse:suse_enterprise_storage:7.1:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_manager_retail_branch_server:4.2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_workstation_extension:15-SP3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_desktop:15-SP3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:opensuse_leap:15.3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_manager_server:4.2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_manager_proxy:4.2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications:15-SP3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server:15-SP3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing:15-SP3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_module_for_packagehub_subpackages:15-SP3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_module_for_basesystem:15-SP3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:strongswan-doc:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:strongswan-sqlite-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:strongswan-sqlite:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:strongswan-nm-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:strongswan-nm:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:strongswan-mysql-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:strongswan-mysql:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:strongswan-libs0-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:strongswan-libs0:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:strongswan-ipsec-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:strongswan-ipsec:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:strongswan-hmac:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:strongswan-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:strongswan-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:strongswan:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20224159-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.