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Red Hat: CVE-2023-50868: bind9: Preparing an NSEC3 closest encloser proof can exhaust CPU resources (Multiple Advisories)

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Red Hat: CVE-2023-50868: bind9: Preparing an NSEC3 closest encloser proof can exhaust CPU resources (Multiple Advisories)

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
02/14/2024
Created
02/28/2024
Added
02/27/2024
Modified
09/13/2024

Description

The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC responses in a random subdomain attack, aka the "NSEC3" issue. The RFC 5155 specification implies that an algorithm must perform thousands of iterations of a hash function in certain situations.

Solution(s)

  • redhat-upgrade-bind
  • redhat-upgrade-bind-chroot
  • redhat-upgrade-bind-debuginfo
  • redhat-upgrade-bind-debugsource
  • redhat-upgrade-bind-devel
  • redhat-upgrade-bind-dnssec-doc
  • redhat-upgrade-bind-dnssec-utils
  • redhat-upgrade-bind-dnssec-utils-debuginfo
  • redhat-upgrade-bind-doc
  • redhat-upgrade-bind-dyndb-ldap
  • redhat-upgrade-bind-dyndb-ldap-debuginfo
  • redhat-upgrade-bind-dyndb-ldap-debugsource
  • redhat-upgrade-bind-export-devel
  • redhat-upgrade-bind-export-libs
  • redhat-upgrade-bind-export-libs-debuginfo
  • redhat-upgrade-bind-libs
  • redhat-upgrade-bind-libs-debuginfo
  • redhat-upgrade-bind-libs-lite
  • redhat-upgrade-bind-libs-lite-debuginfo
  • redhat-upgrade-bind-license
  • redhat-upgrade-bind-lite-devel
  • redhat-upgrade-bind-pkcs11
  • redhat-upgrade-bind-pkcs11-debuginfo
  • redhat-upgrade-bind-pkcs11-devel
  • redhat-upgrade-bind-pkcs11-libs
  • redhat-upgrade-bind-pkcs11-libs-debuginfo
  • redhat-upgrade-bind-pkcs11-utils
  • redhat-upgrade-bind-pkcs11-utils-debuginfo
  • redhat-upgrade-bind-sdb
  • redhat-upgrade-bind-sdb-chroot
  • redhat-upgrade-bind-sdb-debuginfo
  • redhat-upgrade-bind-utils
  • redhat-upgrade-bind-utils-debuginfo
  • redhat-upgrade-bind9-16
  • redhat-upgrade-bind9-16-chroot
  • redhat-upgrade-bind9-16-debuginfo
  • redhat-upgrade-bind9-16-debugsource
  • redhat-upgrade-bind9-16-devel
  • redhat-upgrade-bind9-16-dnssec-utils
  • redhat-upgrade-bind9-16-dnssec-utils-debuginfo
  • redhat-upgrade-bind9-16-doc
  • redhat-upgrade-bind9-16-libs
  • redhat-upgrade-bind9-16-libs-debuginfo
  • redhat-upgrade-bind9-16-license
  • redhat-upgrade-bind9-16-utils
  • redhat-upgrade-bind9-16-utils-debuginfo
  • redhat-upgrade-dhclient
  • redhat-upgrade-dhcp
  • redhat-upgrade-dhcp-client
  • redhat-upgrade-dhcp-client-debuginfo
  • redhat-upgrade-dhcp-common
  • redhat-upgrade-dhcp-debuginfo
  • redhat-upgrade-dhcp-debugsource
  • redhat-upgrade-dhcp-devel
  • redhat-upgrade-dhcp-libs
  • redhat-upgrade-dhcp-libs-debuginfo
  • redhat-upgrade-dhcp-relay
  • redhat-upgrade-dhcp-relay-debuginfo
  • redhat-upgrade-dhcp-server
  • redhat-upgrade-dhcp-server-debuginfo
  • redhat-upgrade-dnsmasq
  • redhat-upgrade-dnsmasq-debuginfo
  • redhat-upgrade-dnsmasq-debugsource
  • redhat-upgrade-dnsmasq-utils
  • redhat-upgrade-dnsmasq-utils-debuginfo
  • redhat-upgrade-python3-bind
  • redhat-upgrade-python3-bind9-16
  • redhat-upgrade-python3-unbound
  • redhat-upgrade-python3-unbound-debuginfo
  • redhat-upgrade-unbound
  • redhat-upgrade-unbound-debuginfo
  • redhat-upgrade-unbound-debugsource
  • redhat-upgrade-unbound-devel
  • redhat-upgrade-unbound-libs
  • redhat-upgrade-unbound-libs-debuginfo

References

  • CVE-2023-50868
  • RHSA-2024:0965
  • RHSA-2024:0977
  • RHSA-2024:0981
  • RHSA-2024:0982
  • RHSA-2024:1334
  • RHSA-2024:1335
  • RHSA-2024:1522
  • RHSA-2024:1543
  • RHSA-2024:1544
  • RHSA-2024:1545
  • RHSA-2024:1647
  • RHSA-2024:1648
  • RHSA-2024:1781
  • RHSA-2024:1782
  • RHSA-2024:1789
  • RHSA-2024:1800
  • RHSA-2024:1801
  • RHSA-2024:1803
  • RHSA-2024:1804
  • RHSA-2024:2551
  • RHSA-2024:2720
  • RHSA-2024:2721
  • RHSA-2024:3271
  • RHSA-2024:3741
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