unbound: amplification of an incoming query into a large number of queries directed to a target

A network amplification vulnerability was found in Unbound, in the way it processes delegation messages from one authoritative zone to another. This flaw allows an attacker to cause a denial of service or be part of an attack against another DNS server when Unbound is deployed as a recursive...

XACK DNS Denial of Service Vulnerability

XACK DNS is a carrier-oriented DNS Domain Name System server from XACK Japan. A security vulnerability exists in XACK DNS. A remote attacker can exploit the vulnerability to degrade the performance of the recursive parser or use the recursive parser as a reflector to conduct a reflection attack...

CVE-2020-5591

XACK DNS 1.11.0 to 1.11.4, 1.10.0 to 1.10.8, 1.8.0 to 1.8.23, 1.7.0 to 1.7.18, and versions before 1.7.0 allow remote attackers to cause a denial of service condition resulting in degradation of the recursive resolver's performance or compromising the recursive resolver as a reflector in a...

CVE-2020-5591

XACK DNS 1.11.0 to 1.11.4, 1.10.0 to 1.10.8, 1.8.0 to 1.8.23, 1.7.0 to 1.7.18, and versions before 1.7.0 allow remote attackers to cause a denial of service condition resulting in degradation of the recursive resolver's performance or compromising the recursive resolver as a reflector in a...

Buffer overflow

regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive Sstudychunk calls...

CVE-2020-12723

regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive Sstudychunk calls...

CVE-2020-12723

regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive Sstudychunk calls...

CVE-2020-12723

regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive Sstudychunk calls...

CVE-2020-12723

regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive Sstudychunk calls. An application written in Perl would only be vulnerable to this flaw if it evaluates regular expressions supplied by the attacker. Evaluating regular expressions in th...

UBUNTU-CVE-2020-12723

regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive Sstudychunk calls. An application written in Perl would only be vulnerable to this flaw if it evaluates regular expressions supplied by the attacker. Evaluating regular expressions in th...

Fedora: Security Advisory for unbound (FEDORA-2020-8e9b62948e)

The remote host is missing an update for the Copyright C 2020 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 software; you can...

openSUSE Security Update : pdns-recursor (openSUSE-2020-698)

This update for pdns-recursor fixes the following issues : - update to 4.1.16 - fixes an issue where records in the answer section of a NXDOMAIN response lacking an SOA were not properly validated CVE-2020-12244, boo1171553 - fixes an issue where invalid hostname on the server can result in...

Updated pdns-recursor packages fix security vulnerabilities

Updated pdns-recursor packages fix security vulnerabilities: An issue in the DNS protocol has been found that allow malicious parties to use recursive DNS services to attack third party authoritative name servers. The attack uses a crafted reply by an authoritative name server to amplify the...

MGASA-2020-0223 Updated pdns-recursor packages fix security vulnerabilities

Updated pdns-recursor packages fix security vulnerabilities: An issue in the DNS protocol has been found that allow malicious parties to use recursive DNS services to attack third party authoritative name servers. The attack uses a crafted reply by an authoritative name server to amplify the...

[SECURITY] Fedora 32 Update: unbound-1.10.1-1.fc32

Unbound is a validating, recursive, and caching DNSSEC resolver. The C implementation of Unbound is developed and maintained by NLnet Labs. It is based on ideas and algorithms taken from a java prototype developed by Verisign labs, Nominet, Kirei and ep.net. Unbound is designed as a set of modula...

New DNS Vulnerability Lets Attackers Launch Large-Scale DDoS Attacks

Israeli cybersecurity researchers have disclosed details about a new flaw impacting DNS protocol that can be exploited to launch amplified, large-scale distributed denial-of-service DDoS attacks to takedown targeted websites. Called NXNSAttack, the flaw hinges on the DNS delegation mechanism to...

CVE-2020-12662

A network amplification vulnerability was found in Unbound, in the way it processes delegation messages from one authoritative zone to another. This flaw allows an attacker to cause a denial of service or be part of an attack against another DNS server when Unbound is deployed as a recursive...

CVE-2020-10995

PowerDNS Recursor from 4.1.0 up to and including 4.3.0 does not sufficiently defend against amplification attacks. An issue in the DNS protocol has been found that allow malicious parties to use recursive DNS services to attack third party authoritative name servers. The attack uses a crafted rep...

CVE-2020-8616 BIND does not sufficiently limit the number of fetches performed when processing referrals

A malicious actor who intentionally exploits this lack of effective limitation on the number of fetches performed when processing referrals can, through the use of specially crafted referrals, cause a recursing server to issue a very large number of fetches in an attempt to process the referral...

CVE-2020-8616: NXNSAttack: Recursive DNS Inefficiencies and Vulnerabilities

A malicious actor who intentionally exploits this lack of effective limitation on the number of fetches performed when processing referrals can, through the use of specially crafted referrals, cause a recursing server to issue a very large number of fetches in an attempt to process the referral...