ALAS2-2020-1507

Related Vulnerabilities: CVE-2019-14834  

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)

ALAS2-2020-1507


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
References: CVE-2019-14834 

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


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