RHSA-2024:2720HighCVSS 7.5

Red Hat Security Advisory: bind and dhcp security update

Published
May 7, 2024
Last Modified
August 6, 2026

🔗 CVE IDs covered (6)

CVE-2021-25220 →CVE-2022-2795 →CVE-2022-3094 →CVE-2023-4408 →CVE-2023-50387 →CVE-2023-50868 →

📋 Description

CVE-2021-25220 — bind: DNS forwarders - cache poisoning vulnerability CVE-2022-2795 — bind: processing large delegations may severely degrade resolver performance CVE-2022-3094 — bind: flooding with UPDATE requests may lead to DoS CVE-2023-4408 — bind9: Parsing large DNS messages may cause excessive CPU load CVE-2023-50387 — bind9: KeyTrap - Extreme CPU consumption in DNSSEC validator CVE-2023-50868 — bind9: Preparing an NSEC3 closest encloser proof can exhaust CPU resources

🎯 Affected products200

  • Red Hat Enterprise Linux AppStream EUS (v.8.6)
  • Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • bind-32:9.11.36-3.el8_6.7.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.6)
  • bind-32:9.11.36-3.el8_6.7.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.8.6)
  • bind-32:9.11.36-3.el8_6.7.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.8.6)
  • bind-32:9.11.36-3.el8_6.7.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • bind-32:9.11.36-3.el8_6.7.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.6)
  • bind-chroot-32:9.11.36-3.el8_6.7.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.6)
  • bind-chroot-32:9.11.36-3.el8_6.7.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.8.6)
  • bind-chroot-32:9.11.36-3.el8_6.7.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.8.6)
  • bind-chroot-32:9.11.36-3.el8_6.7.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.6)
  • bind-debuginfo-32:9.11.36-3.el8_6.7.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.6)
  • bind-debuginfo-32:9.11.36-3.el8_6.7.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • bind-debuginfo-32:9.11.36-3.el8_6.7.i686 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.6)
  • bind-debuginfo-32:9.11.36-3.el8_6.7.i686 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • bind-debuginfo-32:9.11.36-3.el8_6.7.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.8.6)
  • bind-debuginfo-32:9.11.36-3.el8_6.7.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • bind-debuginfo-32:9.11.36-3.el8_6.7.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.8.6)
  • bind-debuginfo-32:9.11.36-3.el8_6.7.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • bind-debuginfo-32:9.11.36-3.el8_6.7.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.6)
  • bind-debuginfo-32:9.11.36-3.el8_6.7.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • bind-debugsource-32:9.11.36-3.el8_6.7.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.6)
  • bind-debugsource-32:9.11.36-3.el8_6.7.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • bind-debugsource-32:9.11.36-3.el8_6.7.i686 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.6)
  • bind-debugsource-32:9.11.36-3.el8_6.7.i686 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • bind-debugsource-32:9.11.36-3.el8_6.7.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.8.6)
  • bind-debugsource-32:9.11.36-3.el8_6.7.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • bind-debugsource-32:9.11.36-3.el8_6.7.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.8.6)
  • bind-debugsource-32:9.11.36-3.el8_6.7.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.6)
  • bind-debugsource-32:9.11.36-3.el8_6.7.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.6)
  • +170 more not shown

✅ Remediation

Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Workaround: If applicable, modify your configuration to either remove all forwarding or all possibility of recursion. Depending on your use case, it may be possible to use other zone types to replace forward zones. Workaround: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

🔗 References (9)