ISC BIND 9 Vulnerable to Denial-of-Service (DoS) via Memory Leaks in EdDSA DNSSEC Verification (CVE-2022-38178)

BIND 9 is vulnerable to a denial-of-service DoS issue due to the presence of a memory leak flaw in the DNSSEC verification code for the EdDSA algorithm that can occur when there is a signature length mismatch. An attacker could spoof the target resolver with responses that have malformed EdDSA...

Astra Linux – Vulnerability in bind9

Clients that use DNS-over-HTTPS DoH can exhaust the CPU and/or memory of a DNS resolver by flooding it with crafted valid or invalid HTTP/2 traffic. This issue affects BIND 9 versions 9.18.0 through 9.18.32, 9.20.0 through 9.20.4, 9.21.0 through 9.21.3, and 9.18.11-S1 through 9.18.32-S1...

Astra Linux – Vulnerability in bind9

It is possible to create a zone such that certain queries to it will generate responses containing numerous records in the Additional section. An attacker sending multiple such queries can cause either the authoritative server or an independent resolver to use excessive resources to process the...

Astra Linux – Vulnerability in bind9

Client queries that trigger the delivery of stale data and also require lookups in local authoritative zone data may result in assertion failures. This issue affects BIND 9 versions 9.16.13 through 9.16.50, 9.18.0 through 9.18.27, 9.19.0 through 9.19.24, 9.11.33-S1 through 9.11.37-S1, 9.16.13-S1...

DEBIAN-CVE-2024-12705

Clients using DNS-over-HTTPS DoH can exhaust a DNS resolver's CPU and/or memory by flooding it with crafted valid or invalid HTTP/2 traffic. This issue affects BIND 9 versions 9.18.0 through 9.18.32, 9.20.0 through 9.20.4, 9.21.0 through 9.21.3, and 9.18.11-S1 through 9.18.32-S1...

bind9: Parsing large DNS messages may cause excessive CPU load

A flaw was found in the bind package. This issue may allow a remote attacker with no specific privileges to craft a specially long DNS message leading to an excessive and uncontrolled CPU usage, the server being unavailable, and a Denial of Service...

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: KeyTrap - Extreme CPU consumption in DNSSEC validator

Processing specially crafted responses coming from DNSSEC-signed zones can lead to uncontrolled CPU usage, leading to a Denial of Service in the DNSSEC-validating resolver side. This vulnerability applies only for systems where DNSSEC validation is enabled...

PT-2026-3771

Name of the Vulnerable Software and Affected Versions BIND 9 versions 9.18.40 through 9.18.43 BIND 9 versions 9.20.13 through 9.20.17 BIND 9 versions 9.21.12 through 9.21.16 BIND 9 versions 9.18.40-S1 through 9.18.43-S1 BIND 9 versions 9.20.13-S1 through 9.20.17-S1 Description Malformed BRID/HHIT...

bind9: KeyTrap - Extreme CPU consumption in DNSSEC validator

Processing specially crafted responses coming from DNSSEC-signed zones can lead to uncontrolled CPU usage, leading to a Denial of Service in the DNSSEC-validating resolver side. This vulnerability applies only for systems where DNSSEC validation is enabled...

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: bind: SIG(0) can be used to exhaust CPU resources

A flaw was found in the bind9 package, where if a DNS server hosts a zone containing a "KEY" resource record or a DNS resolver utilizes the DNSSEC validate feature to validate a "KEY" resource record, a malicious client could exhaust the CPU resourced from the resolver by sending a stream of SIG0...

bind: bind9: BIND's database will be slow if a very large number of RRs exist at the same nam

A flaw was found in the bind9 package, where a hostname with significant resource records may slow down bind's resolver cache and authoritative zone databases while these records are being added or updated. In addition, client queries for the related hostname may cause the same issue. This...

bind9: bind: SIG(0) can be used to exhaust CPU resources

A flaw was found in the bind9 package, where if a DNS server hosts a zone containing a "KEY" resource record or a DNS resolver utilizes the DNSSEC validate feature to validate a "KEY" resource record, a malicious client could exhaust the CPU resourced from the resolver by sending a stream of SIG0...

bind: bind9: BIND's database will be slow if a very large number of RRs exist at the same nam

A flaw was found in the bind9 package, where a hostname with significant resource records may slow down bind's resolver cache and authoritative zone databases while these records are being added or updated. In addition, client queries for the related hostname may cause the same issue. This...

bind: bind9: BIND's database will be slow if a very large number of RRs exist at the same nam

A flaw was found in the bind9 package, where a hostname with significant resource records may slow down bind's resolver cache and authoritative zone databases while these records are being added or updated. In addition, client queries for the related hostname may cause the same issue. This...

bind: bind9: Assertion failure when serving both stale cache data and authoritative zone content

A flaw was found in the bind9 package, where a client query triggers stale data and also requires local lookups may trigger a assertion failure. This issue results in a denial of service of the bind server...

bind9: bind: SIG(0) can be used to exhaust CPU resources

A flaw was found in the bind9 package, where if a DNS server hosts a zone containing a "KEY" resource record or a DNS resolver utilizes the DNSSEC validate feature to validate a "KEY" resource record, a malicious client could exhaust the CPU resourced from the resolver by sending a stream of SIG0...

bind: bind9: BIND's database will be slow if a very large number of RRs exist at the same nam

A flaw was found in the bind9 package, where a hostname with significant resource records may slow down bind's resolver cache and authoritative zone databases while these records are being added or updated. In addition, client queries for the related hostname may cause the same issue. This...

bind9: bind: SIG(0) can be used to exhaust CPU resources

A flaw was found in the bind9 package, where if a DNS server hosts a zone containing a "KEY" resource record or a DNS resolver utilizes the DNSSEC validate feature to validate a "KEY" resource record, a malicious client could exhaust the CPU resourced from the resolver by sending a stream of SIG0...