SUSE update for dnsmasq

1) Resource exhaustion

EUVDB-ID: #VU75389

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-2023-28450

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to application does not properly perform fragmentation of UDP packets. A remote attacker can trigger resource exhaustion by sending overly large DNS UDP packets.

Mitigation

Update the affected package dnsmasq to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server 12: SP3 - SP5

SUSE Linux Enterprise High Performance Computing 12: SP3 - SP5

SUSE Linux Enterprise Server for SAP Applications 12: SP5

SUSE OpenStack Cloud Crowbar: 8 - 9

HPE Helion Openstack: 8

SUSE OpenStack Cloud: 8 - 9

dnsmasq: before 2.78-18.21.1

dnsmasq-debuginfo: before 2.78-18.21.1

dnsmasq-debugsource: before 2.78-18.21.1

dnsmasq-utils: before 2.78-18.21.1

dnsmasq-utils-debuginfo: before 2.78-18.21.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20232123-1/

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.