Important: unbound

Issue Overview: Certain DNSSEC aspects of the DNS protocol in RFC 4035 and related RFCs allow remote attackers to cause a denial of service CPU consumption via one or more DNSSEC responses when there is a zone with many DNSKEY and RRSIG records, aka the "KeyTrap" issue. The protocol specification...

Important: dnsmasq

Issue Overview: Certain DNSSEC aspects of the DNS protocol in RFC 4035 and related RFCs allow remote attackers to cause a denial of service CPU consumption via one or more DNSSEC responses when there is a zone with many DNSKEY and RRSIG records, aka the "KeyTrap" issue. The protocol specification...

CLSA-2024-1709561259 bind: Fix of 2 CVEs

CVE-2023-50387: Resolved CPU exhaustion from specially crafted DNSSEC-signed zone responses - CVE-2023-50868: Resolved CPU exhaustion from DNSSEC-signed zones using NSEC3...

bind9: Preparing an NSEC3 closest encloser proof can exhaust CPU resources

A flaw was found in bind9. By flooding a DNSSEC resolver with responses coming from a DNSEC-signed zone using NSEC3, an attacker can lead the targeted resolver to a CPU exhaustion, further leading to a Denial of Service on the targeted host. This vulnerability applies only for systems where DNSSE...

bind9: Preparing an NSEC3 closest encloser proof can exhaust CPU resources

A flaw was found in bind9. By flooding a DNSSEC resolver with responses coming from a DNSEC-signed zone using NSEC3, an attacker can lead the targeted resolver to a CPU exhaustion, further leading to a Denial of Service on the targeted host. This vulnerability applies only for systems where DNSSE...

SUSE CVE-2023-50868

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...

ALPINE-CVE-2023-50868

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...

DEBIAN-CVE-2023-50868

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...

USN-6633-1 bind9 vulnerabilities

Shoham Danino, Anat Bremler-Barr, Yehuda Afek, and Yuval Shavitt discovered that Bind incorrectly handled parsing large DNS messages. A remote attacker could possibly use this issue to cause Bind to consume resources, leading to a denial of service. CVE-2023-4408 Elias Heftrig, Haya Schulmann,...

UBUNTU-CVE-2023-50868

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...

K000135252: BIND vulnerability CVE-2023-2829

Security Advisory Description A named instance configured to run as a DNSSEC-validating recursive resolver with the Aggressive Use of DNSSEC-Validated Cache RFC 8198 option synth-from-dnssec enabled can be remotely terminated using a zone with a malformed NSEC record. This issue affects BIND 9...

SUSE CVE-2023-2829

A named instance configured to run as a DNSSEC-validating recursive resolver with the Aggressive Use of DNSSEC-Validated Cache RFC 8198 option synth-from-dnssec enabled can be remotely terminated using a zone with a malformed NSEC record. This issue affects BIND 9 versions 9.16.8-S1 through...

CVE-2023-2829

A vulnerability was found in BIND. This security flaw occurs when a named instance is configured to run as a DNSSEC-validating recursive resolver with the Aggressive Use of DNSSEC-Validated Cache RFC 8198 option synth-from-dnssec enabled; remote termination can occur using a zone with a malformed...

AZL-27305 CVE-2023-2829 affecting package bind for versions less than 9.16.44-1

A named instance configured to run as a DNSSEC-validating recursive resolver with the Aggressive Use of DNSSEC-Validated Cache RFC 8198 option synth-from-dnssec enabled can be remotely terminated using a zone with a malformed NSEC record. This issue affects BIND 9 versions 9.16.8-S1 through...

CVE-2023-2829

A named instance configured to run as a DNSSEC-validating recursive resolver with the Aggressive Use of DNSSEC-Validated Cache RFC 8198 option synth-from-dnssec enabled can be remotely terminated using a zone with a malformed NSEC record. This issue affects BIND 9 versions 9.16.8-S1 through...

Design/Logic Flaw

A named instance configured to run as a DNSSEC-validating recursive resolver with the Aggressive Use of DNSSEC-Validated Cache RFC 8198 option synth-from-dnssec enabled can be remotely terminated using a zone with a malformed NSEC record. This issue affects BIND 9 versions 9.16.8-S1 through...

CVE-2023-2829 Malformed NSEC records can cause named to terminate unexpectedly when synth-from-dnssec is enabled

A named instance configured to run as a DNSSEC-validating recursive resolver with the Aggressive Use of DNSSEC-Validated Cache RFC 8198 option synth-from-dnssec enabled can be remotely terminated using a zone with a malformed NSEC record. This issue affects BIND 9 versions 9.16.8-S1 through...

CVE-2023-2829

CVE-2023-2829 affects BIND 9: named may terminate when synth-from-dnssec is enabled and a zone contains a malformed NSEC record. Affected versions are BIND 9.16.8-S1–9.16.41-S1 and 9.18.11-S1–9.18.15-S1. The issue is caused by parsing/processing of DNSSEC-cache data (NSEC) and can be triggered re...

CVE-2023-2829 Malformed NSEC records can cause named to terminate unexpectedly when synth-from-dnssec is enabled

A named instance configured to run as a DNSSEC-validating recursive resolver with the Aggressive Use of DNSSEC-Validated Cache RFC 8198 option synth-from-dnssec enabled can be remotely terminated using a zone with a malformed NSEC record. This issue affects BIND 9 versions 9.16.8-S1 through...

CVE-2023-2829

A named instance configured to run as a DNSSEC-validating recursive resolver with the Aggressive Use of DNSSEC-Validated Cache RFC 8198 option synth-from-dnssec enabled can be remotely terminated using a zone with a malformed NSEC record. This issue affects BIND 9 versions 9.16.8-S1 through...