SUSE update for strongswan

Published: 2021-10-19

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-41990 CVE-2021-41991
CWE-ID	CWE-190
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	SUSE Linux Enterprise Workstation Extension Operating systems & Components / Operating system SUSE Linux Enterprise Module for Basesystem Operating systems & Components / Operating system SUSE Linux Enterprise Module for Packagehub Subpackages Operating systems & Components / Operating system package or component strongswan-doc Operating systems & Components / Operating system package or component strongswan-libs0-debuginfo Operating systems & Components / Operating system package or component strongswan-libs0 Operating systems & Components / Operating system package or component strongswan-ipsec-debuginfo Operating systems & Components / Operating system package or component strongswan-ipsec Operating systems & Components / Operating system package or component strongswan-hmac Operating systems & Components / Operating system package or component strongswan Operating systems & Components / Operating system package or component strongswan-nm-debuginfo Operating systems & Components / Operating system package or component strongswan-nm Operating systems & Components / Operating system package or component strongswan-debugsource Operating systems & Components / Operating system package or component strongswan-debuginfo Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Integer overflow

EUVDB-ID: #VU57554

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-41990

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow when processing a crafted certificate with an RSASSA-PSS signature. A remote attacker can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected package strongswan to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Workstation Extension: 15-SP2 - 15-SP3

SUSE Linux Enterprise Module for Packagehub Subpackages: 15-SP2 - 15-SP3

SUSE Linux Enterprise Module for Basesystem: 15-SP2 - 15-SP3

strongswan-doc: before 5.8.2-11.21.1

strongswan-libs0-debuginfo: before 5.8.2-11.21.1

strongswan-libs0: before 5.8.2-11.21.1

strongswan-ipsec-debuginfo: before 5.8.2-11.21.1

strongswan-ipsec: before 5.8.2-11.21.1

strongswan-hmac: before 5.8.2-11.21.1

strongswan: before 5.8.2-11.21.1

strongswan-nm-debuginfo: before 5.8.2-11.21.1

strongswan-nm: before 5.8.2-11.21.1

strongswan-debugsource: before 5.8.2-11.21.1

strongswan-debuginfo: before 5.8.2-11.21.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213467-1/

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.

2) Integer overflow

EUVDB-ID: #VU57553