BIND-9-Cache-Poisoning-PoC---CVE-2025-40778

BIND 9 Cache Poisoning PoC - CVE-2025-40778 Conceptual Overview This vulnerability allows an attacker to corrupt the DNS cache of a BIND Resolver, forcing legitimate users to be redirected to malicious IP addresses without their knowledge. The core logic of the attack: The attack relies on...

cve-2026-5950-bind9-resolver-dos

CVE-2026-5950 - DoS del Resolver BIND 9 Note di ricerca e linee guida difensive per CVE-2026-5950, una vulnerabilità di ciclo di reinvio illimitato nella macchina a stati del resolver BIND 9. Panoramica CVE-2026-5950 colpisce i resolver ricorsivi BIND 9. In specifiche condizioni di tentativo e...

bind: BIND 9 server memory exhaustion during GSS-API TKEY negotiation

A flaw was found in BIND. A remote attacker can exploit this vulnerability by sending maliciously-constructed packets to BIND servers configured for TKEY-based authentication via GSS-API Generic Security Service Application Program Interface tokens. This can lead to excessive memory consumption,...

bind: bind9: Unexpected exit with NSEC and NSEC3 both present

If a provably insecure domain is covered by both an NSEC and NSEC3 record at the parent, and there exist an RRSIG for only one of these types, then BIND may exit unexpectedly with an assertion while validating this proof...

bind: bind9: DNSSEC Validation Bypass via Out-of-Zone NSEC Next Field

The BIND resolver accepts validly-signed NSEC records where the "Next Domain Name" field points outside the signer's zone...

bind: bind9: Cache poisoning via label count discrepancy, RRSIG, wildcards

It is possible for an attacker's zone to respond to a query with an RRSIG that has a smaller number of labels than the zone in which the RRSIG is contained. This causes named to produce a wildcard name for a zone that is shorter than the attacker's zone, which can result in cache poisoning. For...

bind: BIND 9 server memory exhaustion during GSS-API TKEY negotiation

A flaw was found in BIND. A remote attacker can exploit this vulnerability by sending maliciously-constructed packets to BIND servers configured for TKEY-based authentication via GSS-API Generic Security Service Application Program Interface tokens. This can lead to excessive memory consumption,...

bind: bind9: Cache poisoning via label count discrepancy, RRSIG, wildcards

It is possible for an attacker's zone to respond to a query with an RRSIG that has a smaller number of labels than the zone in which the RRSIG is contained. This causes named to produce a wildcard name for a zone that is shorter than the attacker's zone, which can result in cache poisoning. For...

bind: bind9: Unexpected exit with NSEC and NSEC3 both present

If a provably insecure domain is covered by both an NSEC and NSEC3 record at the parent, and there exist an RRSIG for only one of these types, then BIND may exit unexpectedly with an assertion while validating this proof...

bind9: bind: Potential wildcard CNAME RPZ policy bypass

A flaw was found in BIND 9, a widely used Domain Name System DNS software. A remote attacker could exploit this by sending specially crafted, excessively long DNS queries. This could bypass Response Policy Zone RPZ rules, which are designed to block access to malicious domains, and potentially...

bind: bind9: Potential memory usage beyond configured limits

A DNSSEC validating resolver that is under a random subdomain attack against a DNSSEC-signed zone can suffer from runaway memory usage. The attacker needs to be able to send queries faster than the resolver can perform validation. The increased memory usage can be orders of magnitude beyond the...

bind: bind9: Cache poisoning via label count discrepancy, RRSIG, wildcards

It is possible for an attacker's zone to respond to a query with an RRSIG that has a smaller number of labels than the zone in which the RRSIG is contained. This causes named to produce a wildcard name for a zone that is shorter than the attacker's zone, which can result in cache poisoning. For...

bind9: bind: Potential wildcard CNAME RPZ policy bypass

A flaw was found in BIND 9, a widely used Domain Name System DNS software. A remote attacker could exploit this by sending specially crafted, excessively long DNS queries. This could bypass Response Policy Zone RPZ rules, which are designed to block access to malicious domains, and potentially...

bind: BIND 9 server memory exhaustion during GSS-API TKEY negotiation

A flaw was found in BIND. A remote attacker can exploit this vulnerability by sending maliciously-constructed packets to BIND servers configured for TKEY-based authentication via GSS-API Generic Security Service Application Program Interface tokens. This can lead to excessive memory consumption,...

Important: Red Hat Security Advisory: bind security update

An update for bind is now available for Red Hat Enterprise Linux 9.6 Extended Update Support. 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 ea...

bind9: bind: Potential wildcard CNAME RPZ policy bypass

A flaw was found in BIND 9, a widely used Domain Name System DNS software. A remote attacker could exploit this by sending specially crafted, excessively long DNS queries. This could bypass Response Policy Zone RPZ rules, which are designed to block access to malicious domains, and potentially...

RLSA-2026:54654 Important: bind security update

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. Security Fixes:...

bind: bind9: Unexpected exit with NSEC and NSEC3 both present

If a provably insecure domain is covered by both an NSEC and NSEC3 record at the parent, and there exist an RRSIG for only one of these types, then BIND may exit unexpectedly with an assertion while validating this proof...

bind9: bind: Potential wildcard CNAME RPZ policy bypass

A flaw was found in BIND 9, a widely used Domain Name System DNS software. A remote attacker could exploit this by sending specially crafted, excessively long DNS queries. This could bypass Response Policy Zone RPZ rules, which are designed to block access to malicious domains, and potentially...

bind9: bind: Potential wildcard CNAME RPZ policy bypass

A flaw was found in BIND 9, a widely used Domain Name System DNS software. A remote attacker could exploit this by sending specially crafted, excessively long DNS queries. This could bypass Response Policy Zone RPZ rules, which are designed to block access to malicious domains, and potentially...