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RHEL 8 : bind and dhcp (RHSA-2024:2720)
medium Nessus Plugin ID 195112
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Synopsis
The remote Red Hat host is missing one or more security updates for bind / dhcp.Description
The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:2720 advisory.The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols.
BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly.
The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows individual devices on an IP network to get their own network configuration information, including an IP address, a subnet mask, and a broadcast address. The dhcp packages provide a relay agent and ISC DHCP service required to enable and administer DHCP on a network.
Security Fix(es):
* bind: KeyTrap - Extreme CPU consumption in DNSSEC validator (CVE-2023-50387)
* bind: Preparing an NSEC3 closest encloser proof can exhaust CPU resources (CVE-2023-50868)
* bind: Parsing large DNS messages may cause excessive CPU load (CVE-2023-4408)
* bind: flooding with UPDATE requests may lead to DoS (CVE-2022-3094)
* bind: processing large delegations may severely degrade resolver performance (CVE-2022-2795)
* bind: DNS forwarders - cache poisoning vulnerability (CVE-2021-25220)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
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 RHEL bind / dhcp packages based on the guidance in RHSA-2024:2720.See Also
http://www.nessus.org/u?77bad54c
https://access.redhat.com/errata/RHSA-2024:2720
https://access.redhat.com/security/updates/classification/#important
https://bugzilla.redhat.com/show_bug.cgi?id=2064512
https://bugzilla.redhat.com/show_bug.cgi?id=2128584
https://bugzilla.redhat.com/show_bug.cgi?id=2164032
https://bugzilla.redhat.com/show_bug.cgi?id=2263896
Plugin Details
Severity: Medium
ID: 195112
File Name: redhat-RHSA-2024-2720.nasl
Version: 1.3
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 5/7/2024
Updated: 11/7/2024
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.1
Vendor
Vendor Severity: Important
CVSS v2
Risk Factor: Medium
Base Score: 4
Temporal Score: 3
Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:P/A:N
CVSS Score Source: CVE-2021-25220
CVSS v3
Risk Factor: Medium
Base Score: 6.8
Temporal Score: 5.9
Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
CVSS v4
Risk Factor: Medium
Base Score: 6.3
Threat Score: 1.7
Threat Vector: CVSS:4.0/E:U
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
CVSS Score Source: CVE-2022-2795
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:dhcp-common, p-cpe:/a:redhat:enterprise_linux:dhcp-relay, p-cpe:/a:redhat:enterprise_linux:bind-sdb, p-cpe:/a:redhat:enterprise_linux:bind-pkcs11-utils, p-cpe:/a:redhat:enterprise_linux:bind, p-cpe:/a:redhat:enterprise_linux:bind-libs-lite, p-cpe:/a:redhat:enterprise_linux:bind-utils, p-cpe:/a:redhat:enterprise_linux:bind-pkcs11-libs, p-cpe:/a:redhat:enterprise_linux:dhcp-client, p-cpe:/a:redhat:enterprise_linux:dhcp-server, p-cpe:/a:redhat:enterprise_linux:bind-lite-devel, p-cpe:/a:redhat:enterprise_linux:bind-chroot, cpe:/o:redhat:rhel_eus:8.6, p-cpe:/a:redhat:enterprise_linux:python3-bind, p-cpe:/a:redhat:enterprise_linux:bind-license, p-cpe:/a:redhat:enterprise_linux:bind-export-devel, p-cpe:/a:redhat:enterprise_linux:bind-export-libs, p-cpe:/a:redhat:enterprise_linux:bind-devel, p-cpe:/a:redhat:enterprise_linux:bind-pkcs11-devel, p-cpe:/a:redhat:enterprise_linux:bind-sdb-chroot, p-cpe:/a:redhat:enterprise_linux:dhcp-libs, p-cpe:/a:redhat:enterprise_linux:bind-pkcs11, p-cpe:/a:redhat:enterprise_linux:dhcp, p-cpe:/a:redhat:enterprise_linux:bind-libs
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 5/7/2024
Vulnerability Publication Date: 3/16/2022
Reference Information
CVE: CVE-2021-25220, CVE-2022-2795, CVE-2022-3094, CVE-2023-4408, CVE-2023-50387, CVE-2023-50868