Knot Resolver < 5.6.0 DoS Vulnerability

Knot Resolver is prone to a denial of service DoS vulnerability. Copyright C 2023 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later This program is free...

CVE-2023-26249

Knot Resolver before 5.6.0 enables attackers to consume its resources, launching amplification attacks and potentially causing a denial of service. Specifically, a single client query may lead to a hundred TCP connection attempts if a DNS server closes connections without providing a response...

DEBIAN-CVE-2023-26249

Knot Resolver before 5.6.0 enables attackers to consume its resources, launching amplification attacks and potentially causing a denial of service. Specifically, a single client query may lead to a hundred TCP connection attempts if a DNS server closes connections without providing a response...

Code injection

Knot Resolver before 5.6.0 enables attackers to consume its resources, launching amplification attacks and potentially causing a denial of service. Specifically, a single client query may lead to a hundred TCP connection attempts if a DNS server closes connections without providing a response...

UBUNTU-CVE-2023-26249

Knot Resolver before 5.6.0 enables attackers to consume its resources, launching amplification attacks and potentially causing a denial of service. Specifically, a single client query may lead to a hundred TCP connection attempts if a DNS server closes connections without providing a response...

CVE-2023-26249

Knot Resolver before 5.6.0 enables attackers to consume its resources, launching amplification attacks and potentially causing a denial of service. Specifically, a single client query may lead to a hundred TCP connection attempts if a DNS server closes connections without providing a response...

CVE-2023-26249

Knot Resolver before 5.6.0 enables attackers to consume its resources, launching amplification attacks and potentially causing a denial of service. Specifically, a single client query may lead to a hundred TCP connection attempts if a DNS server closes connections without providing a response...

CVE-2023-26249

Knot Resolver before 5.6.0 enables attackers to consume its resources, launching amplification attacks and potentially causing a denial of service. Specifically, a single client query may lead to a hundred TCP connection attempts if a DNS server closes connections without providing a response...

Knot Resolver 安全漏洞

Knot Resolver is a caching DNS resolver implementation that includes a resolver library and daemon. A security vulnerability exists in Knot Resolver versions prior to 5.6.0, which can be exploited by an attacker to consume server resources and cause a denial of service...

CVE-2023-26249

Knot Resolver is affected by a DoS vulnerability (CVE-2023-26249) in versions prior to 5.6.0. The issue arises from insufficient input validation in the DNS translator, allowing a single client query to trigger many TCP reconnections (up to about a hundred attempts) when upstream servers close wi...

CVE-2023-26249

Knot Resolver before 5.6.0 enables attackers to consume its resources, launching amplification attacks and potentially causing a denial of service. Specifically, a single client query may lead to a hundred TCP connection attempts if a DNS server closes connections without providing a response...

CVE-2023-26249

Knot Resolver before 5.6.0 enables attackers to consume its resources, launching amplification attacks and potentially causing a denial of service. Specifically, a single client query may lead to a hundred TCP connection attempts if a DNS server closes connections without providing a response...

SUSE CVE-2014-0486

Knot DNS before 1.5.2 allows remote attackers to cause a denial of service application crash via a crafted DNS message...

SUSE CVE-2016-6171

Knot DNS before 2.3.0 allows remote DNS servers to cause a denial of service memory exhaustion and slave server crash via a large zone transfer for 1 DDNS, 2 AXFR, or 3 IXFR...

SUSE CVE-2017-11104

Knot DNS before 2.4.5 and 2.5.x before 2.5.2 contains a flaw within the TSIG protocol implementation that would allow an attacker with a valid key name and algorithm to bypass TSIG authentication if no additional ACL restrictions are set, because of an improper TSIG validity period check...

SUSE CVE-2018-1110

A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial of service...

SUSE CVE-2018-10920

Improper input validation bug in DNS resolver component of Knot Resolver before 2.4.1 allows remote attacker to poison cache...

SUSE CVE-2020-12667

Knot Resolver before 5.1.1 allows traffic amplification via a crafted DNS answer from an attacker-controlled server, aka an "NXNSAttack" issue. This is triggered by random subdomains in the NSDNAME in NS records...

SUSE CVE-2021-40083

Knot Resolver before 5.3.2 is prone to an assertion failure, triggerable by a remote attacker in an edge case NSEC3 with too many iterations used for a positive wildcard proof...

SUSE CVE-2022-40188

Knot Resolver before 5.5.3 allows remote attackers to cause a denial of service CPU consumption because of algorithmic complexity. During an attack, an authoritative server must return large NS sets or address sets...