SUSE update for dnsmasq

1) Use-after-free

EUVDB-ID: #VU63013

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-2022-0934

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error when handling DHCPv6 requests. A remote attacker can send specially crafted DHCPv6 packets to the affected application, trigger a use-after-free error and perform a denial of service (DoS) attack.

Mitigation

Update the affected package dnsmasq to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Realtime Extension: 15-SP2

SUSE Linux Enterprise Micro: 5.0 - 5.2

SUSE Linux Enterprise Server: 15-SP1-BCL - 15-SP4

SUSE Linux Enterprise High Performance Computing: 15-SP1-ESPOS - 15-SP4

SUSE Enterprise Storage: 6 - 7.1

SUSE Manager Server: 4.1 - 4.2

SUSE Manager Retail Branch Server: 4.1

SUSE Manager Proxy: 4.1 - 4.2

SUSE Linux Enterprise Server for SAP: 15-SP1 - 15-SP2

SUSE Linux Enterprise Module for Basesystem: 15-SP3 - 15-SP4

SUSE Linux Enterprise Desktop: 15-SP3 - 15-SP4

SUSE CaaS Platform: 4.0

openSUSE Leap: 15.3 - 15.4

SUSE Linux Enterprise Server for SAP Applications: 15-SP3 - 15-SP4

dnsmasq-utils-debuginfo: before 2.86-150100.7.20.1

dnsmasq-utils: before 2.86-150100.7.20.1

dnsmasq-debugsource: before 2.86-150100.7.20.1

dnsmasq-debuginfo: before 2.86-150100.7.20.1

dnsmasq: before 2.86-150100.7.20.1

External links

http://www.suse.com/support/update/announcement/2022/suse-su-20221307-1/

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.