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CentOS 9 : dhcp-4.4.2-18.b1.el9

medium Nessus Plugin ID 191202

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Synopsis

The remote CentOS host is missing one or more security updates for dhcp-client.

Description

The remote CentOS Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the dhcp-4.4.2-18.b1.el9 build changelog.

 - In ISC DHCP 4.4.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1, when the function option_code_hash_lookup() is called from add_option(), it increases the option's refcount field. However, there is not a corresponding call to option_dereference() to decrement the refcount field. The function add_option() is only used in server responses to lease query packets. Each lease query response calls this function for several options, so eventually, the reference counters could overflow and cause the server to abort. (CVE-2022-2928)

 - In ISC DHCP 1.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1 a system with access to a DHCP server, sending DHCP packets crafted to include fqdn labels longer than 63 bytes, could eventually cause the server to run out of memory. (CVE-2022-2929)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the CentOS 9 Stream dhcp-client package.

See Also

https://kojihub.stream.centos.org/koji/buildinfo?buildID=25580

Plugin Details

Severity: Medium

ID: 191202

File Name: centos9_dhcp-4_4_2-18_b1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2/29/2024

Updated: 4/26/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

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

CVSS Score Source: CVE-2022-2929

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:A/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

Vulnerability Information

CPE: p-cpe:/a:centos:centos:dhcp-server, p-cpe:/a:centos:centos:dhcp-devel, cpe:/a:centos:centos:9, p-cpe:/a:centos:centos:dhcp-common, p-cpe:/a:centos:centos:dhcp-libs-static, p-cpe:/a:centos:centos:dhcp-devel-doc, p-cpe:/a:centos:centos:dhcp-relay, p-cpe:/a:centos:centos:dhcp-client

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/3/2022

Vulnerability Publication Date: 10/6/2022

Reference Information

CVE: CVE-2022-2928, CVE-2022-2929

IAVB: 2022-B-0037