HCE1-SA-2024-0044 Important HCE 1.1 Security Fix(es): 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. (CVE-2023-50868) The DNS message parsing code in `named` includes a section whose computational complexity is overly high. It does not cause problems for typical DNS traffic, but crafted queries and responses may cause excessive CPU load on the affected `named` instance by exploiting this flaw. This issue affects both authoritative servers and recursive resolvers. This issue affects BIND 9 versions 9.0.0 through 9.16.45, 9.18.0 through 9.18.21, 9.19.0 through 9.19.19, 9.9.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.45-S1, and 9.18.11-S1 through 9.18.21-S1. (CVE-2023-4408) 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. (CVE-2023-50387) HCE 1.1 bind-9.11.4-26.P2.hce1c.16.x86_64.rpm bind-chroot-9.11.4-26.P2.hce1c.16.x86_64.rpm bind-export-libs-9.11.4-26.P2.hce1c.16.x86_64.rpm bind-libs-9.11.4-26.P2.hce1c.16.x86_64.rpm bind-libs-lite-9.11.4-26.P2.hce1c.16.x86_64.rpm bind-license-9.11.4-26.P2.hce1c.16.noarch.rpm bind-pkcs11-9.11.4-26.P2.hce1c.16.x86_64.rpm bind-pkcs11-libs-9.11.4-26.P2.hce1c.16.x86_64.rpm bind-pkcs11-utils-9.11.4-26.P2.hce1c.16.x86_64.rpm bind-utils-9.11.4-26.P2.hce1c.16.x86_64.rpm