Amazon Linux 2 Security Advisory: ALAS-2020-1507
Advisory Release Date: 2020-10-22 17:25 Pacific
Advisory Updated Date: 2020-10-22 22:38 Pacific
Severity:
Low
Issue Overview:
A flaw was found in the Dnsmasq application where a remote attacker can trigger a memory leak by sending specially crafted DHCP responses to the server. A successful attack is dependent on a specific configuration regarding the domain name set into the dnsmasq.conf file. Over time, the memory leak may cause the process to run out of memory and terminate, causing a denial of service. (CVE-2019-14834)
Affected Packages:
dnsmasq
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update dnsmasq to update your system.
New Packages:
aarch64:
dnsmasq-2.76-16.amzn2.0.1.aarch64
dnsmasq-utils-2.76-16.amzn2.0.1.aarch64
dnsmasq-debuginfo-2.76-16.amzn2.0.1.aarch64
i686:
dnsmasq-2.76-16.amzn2.0.1.i686
dnsmasq-utils-2.76-16.amzn2.0.1.i686
dnsmasq-debuginfo-2.76-16.amzn2.0.1.i686
src:
dnsmasq-2.76-16.amzn2.0.1.src
x86_64:
dnsmasq-2.76-16.amzn2.0.1.x86_64
dnsmasq-utils-2.76-16.amzn2.0.1.x86_64
dnsmasq-debuginfo-2.76-16.amzn2.0.1.x86_64