openEuler 22.03 LTS update for libreswan

1) NULL pointer dereference

EUVDB-ID: #VU59521

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-23094

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to a NULL pointer dereference error when processing malformed IKEv1 packets. A remote attacker can send specially crafted IKEv1 packet to the application, trigger a NULL pointer dereference error during a logging action on the rejected IKEv1 packet and crash the pluto daemon.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS

libreswan-debuginfo: before 4.5-2

libreswan-help: before 4.5-2

libreswan-debugsource: before 4.5-2

libreswan: before 4.5-2

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1738

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.