Red Hat: CVE-2023-50387: bind9: KeyTrap - Extreme CPU consumption in DNSSEC validator (Multiple Advisories)
Description
Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the "KeyTrap" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records.
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-dhcp-client
- redhat-upgrade-dhcp-client-debuginfo
- redhat-upgrade-dhcp-common
- redhat-upgrade-dhcp-debuginfo
- redhat-upgrade-dhcp-debugsource
- 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
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