Vulnerability identifier: #VU31907

Vulnerability risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-14834

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

A vulnerability was found in dnsmasq before version 2.81, where the memory leak allows remote attackers to cause a denial of service (memory consumption) via vectors involving DHCP response creation.

Mitigation
Install update from vendor's website.

External links
http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=69bc94779c2f035a9fffdb5327a54c3aeca73ed5
http://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14834
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JU474LT66BHNVFG5C4GEV3VTZNAEJ3BS/

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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.