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Red Hat Security Advisory 2024-3741-03

Red Hat Security Advisory 2024-3741-03
Posted Jun 10, 2024
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2024-3741-03 - An update for bind, bind-dyndb-ldap, and dhcp is now available for Red Hat Enterprise Linux 7.

tags | advisory
systems | linux, redhat
advisories | CVE-2023-4408
SHA-256 | 1e1932147c205a1a2280ffc2c5b7db497230c44e6a9ee51941180e78674868dc

Red Hat Security Advisory 2024-3741-03

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The following advisory data is extracted from:

https://access.redhat.com/security/data/csaf/v2/advisories/2024/rhsa-2024_3741.json

Red Hat officially shut down their mailing list notifications October 10, 2023. Due to this, Packet Storm has recreated the below data as a reference point to raise awareness. It must be noted that due to an inability to easily track revision updates without crawling Red Hat's archive, these advisories are single notifications and we strongly suggest that you visit the Red Hat provided links to ensure you have the latest information available if the subject matter listed pertains to your environment.

- Packet Storm Staff




====================================================================
Red Hat Security Advisory

Synopsis: Important: bind, bind-dyndb-ldap, and dhcp security update
Advisory ID: RHSA-2024:3741-03
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2024:3741
Issue date: 2024-06-10
Revision: 03
CVE Names: CVE-2023-4408
====================================================================

Summary:

An update for bind, bind-dyndb-ldap, and dhcp is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.




Description:

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.

Bind-dyndb-ldap provides an LDAP back-end plug-in for BIND. It features support for dynamic updates and internal caching, to lift the load off of your LDAP server.

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)

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.


Solution:

https://access.redhat.com/articles/11258



CVEs:

CVE-2023-4408

References:

https://access.redhat.com/security/updates/classification/#important
https://bugzilla.redhat.com/show_bug.cgi?id=2263896
https://bugzilla.redhat.com/show_bug.cgi?id=2263914
https://bugzilla.redhat.com/show_bug.cgi?id=2263917

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