Detections
Analytics
Amazon Linux 2 : dhcp (ALAS-2018-984)
high Nessus Plugin ID 109137
Language:
Synopsis
The remote Amazon Linux 2 host is missing a security update.Description
Buffer overflow in dhclient possibly allowing code execution triggered by malicious serverAn out-of-bound memory access flaw was found in the way dhclient processed a DHCP response packet. A malicious DHCP server could potentially use this flaw to crash dhclient processes running on DHCP client machines via a crafted DHCP response packet. (CVE-2018-5732)
Reference count overflow in dhcpd allows denial of service
A denial of service flaw was found in the way dhcpd handled reference counting when processing client requests. A malicious DHCP client could use this flaw to trigger a reference count overflow on the server side, potentially causing dhcpd to crash, by sending large amounts of traffic. (CVE-2018-5733)
Solution
Run 'yum update dhcp' to update your system.See Also
Plugin Details
Severity: High
ID: 109137
File Name: al2_ALAS-2018-984.nasl
Version: 1.4
Type: local
Agent: unix
Published: 4/18/2018
Updated: 7/10/2020
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: Medium
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS v3
Risk Factor: High
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:dhclient, p-cpe:/a:amazon:linux:dhcp, p-cpe:/a:amazon:linux:dhcp-common, p-cpe:/a:amazon:linux:dhcp-debuginfo, p-cpe:/a:amazon:linux:dhcp-devel, p-cpe:/a:amazon:linux:dhcp-libs, cpe:/o:amazon:linux:2
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Patch Publication Date: 4/5/2018
Vulnerability Publication Date: 1/16/2019
Reference Information
CVE: CVE-2018-5732, CVE-2018-5733
ALAS: 2018-984
IAVB: 2018-B-0034-S