EulerOS Virtualization 3.0.1.0 : dhcp (EulerOS-SA-2019-1443)

high Nessus Plugin ID 124946

Synopsis

The remote EulerOS Virtualization host is missing multiple security updates.

Description

According to the versions of the dhcp packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

- ISC DHCP 4.x before 4.1-ESV-R12-P1, 4.2.x, and 4.3.x before 4.3.3-P1 allows remote attackers to cause a denial of service (application crash) via an invalid length field in a UDP IPv4 packet.(CVE-2015-8605)

- 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)

- An 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)

- A resource-consumption flaw was discovered in the DHCP server. dhcpd did not restrict the number of open connections to OMAPI and failover ports. A remote attacker able to establish TCP connections to one of these ports could use this flaw to cause dhcpd to exit unexpectedly, stop responding requests, or exhaust system sockets (denial of service).(CVE-2016-2774)

- 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)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected dhcp packages.

Plugin Details

Severity: High

ID: 124946

File Name: EulerOS_SA-2019-1443.nasl

Version: 1.7

Type: local

Family: Huawei Local Security Checks

Published: 5/14/2019

Updated: 5/20/2022

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2016-2774

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS Score Source: CVE-2018-5733

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:dhclient, p-cpe:/a:huawei:euleros:dhcp, p-cpe:/a:huawei:euleros:dhcp-common, p-cpe:/a:huawei:euleros:dhcp-libs, cpe:/o:huawei:euleros:uvp:3.0.1.0

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/uvp_version

Exploit Ease: No known exploits are available

Patch Publication Date: 5/7/2019

Reference Information

CVE: CVE-2015-8605, CVE-2016-2774, CVE-2017-3144, CVE-2018-5732, CVE-2018-5733

Detections

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