SUSE update for strongswan

1) Improper Certificate Validation

EUVDB-ID: #VU67813

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

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

External links

http://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.