SUSE update for strongswan

1) Integer overflow

EUVDB-ID: #VU57553

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-2021-41991

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 multiple requests with different certificates. A remote attacker can send 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 OpenStack Cloud Crowbar: 8 - 9

SUSE Linux Enterprise Server for SAP: 12-SP3 - 12-SP4

HPE Helion Openstack: 8

SUSE Linux Enterprise Server: 12-SP2-BCL - 12-SP5

SUSE OpenStack Cloud: 8 - 9

strongswan-libs0-debuginfo: before 5.1.3-26.16.1

strongswan-libs0: before 5.1.3-26.16.1

strongswan-ipsec-debuginfo: before 5.1.3-26.16.1

strongswan-ipsec: before 5.1.3-26.16.1

strongswan-hmac: before 5.1.3-26.16.1

strongswan-debugsource: before 5.1.3-26.16.1

strongswan: before 5.1.3-26.16.1

strongswan-doc: before 5.1.3-26.16.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213468-1/

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.