Amazon Linux 2 Security Advisory: ALAS-2018-963
Advisory Release Date: 2018-02-20 21:48 Pacific
Advisory Updated Date: 2018-02-21 21:24 Pacific
Severity:
Medium
Issue Overview:
Omapi code doesn't free socket descriptors when empty message is received allowing denial-of-service
It was found that the DHCP daemon did not properly clean up closed OMAPI connections in certain cases. A remote attacker able to connect to the OMAPI port could use this flaw to exhaust file descriptors in the DHCP daemon, leading to a denial of service in the OMAPI functionality.(CVE-2017-3144)
Affected Packages:
dhcp
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 dhcp to update your system.
New Packages:
src:
dhcp-4.2.5-58.amzn2.1.2.src
x86_64:
dhcp-4.2.5-58.amzn2.1.2.x86_64
dhclient-4.2.5-58.amzn2.1.2.x86_64
dhcp-common-4.2.5-58.amzn2.1.2.x86_64
dhcp-libs-4.2.5-58.amzn2.1.2.x86_64
dhcp-devel-4.2.5-58.amzn2.1.2.x86_64
dhcp-debuginfo-4.2.5-58.amzn2.1.2.x86_64