Memory leak in ECDSA DNSSEC verification code

...

CVE-2022-33991

dproxy-nexgen aka dproxy nexgen forwards and caches DNS queries with the CD aka checking disabled bit set to 1. This leads to disabling of DNSSEC protection provided by upstream resolvers...

DNSSEC: How It Works & Key Considerations

From its beginnings as a replacement for a centralized database, the Domain Name System DNS has evolved into a dynamic, highly distributed, question-answer protocol. The proverbial "phone book of the internet" has increased in complexity and scale alongside the rapid growth of the World Wide Web...

DEBIAN-CVE-2020-25687

A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. This flaw allows a remote attacker, who can create valid DNS replies, to cause an overflow in a heap-allocated memory...

DNSpooq Flaws Allow DNS Hijacking of Millions of Devices

Researchers have uncovered a set of flaws in dnsmasq, popular open-source software used for caching Domain Name System DNS responses for home and commercial routers and servers. The set of seven flaws are comprised of buffer overflow issues and flaws allowing for DNS cache-poisoning attacks also...

dnsmasq: heap-based buffer overflow in sort_rrset() when DNSSEC is enabled

A flaw was found in dnsmasq. A heap-based buffer overflow was discovered in the way RRSets are sorted before validating with DNSSEC data. An attacker on the network, who can forge DNS replies such as that they are accepted as valid, could use this flaw to cause a buffer overflow with arbitrary da...

dnsmasq: heap-based buffer overflow with large memcpy in get_rdata() when DNSSEC is enabled

A flaw was found in dnsmasq. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. A remote attacker, who can create valid DNS replies, could use this flaw to cause an overflow in a heap-allocated memory. This flaw is cause...

dnsmasq: buffer overflow in extract_name() due to missing length check when DNSSEC is enabled

A flaw was found in dnsmasq. A buffer overflow vulnerability was discovered in the way dnsmasq extract names from DNS packets before validating them with DNSSEC data. An attacker on the network, who can create valid DNS replies, could use this flaw to cause an overflow with arbitrary data in a...

dnsmasq: heap-based buffer overflow in sort_rrset() when DNSSEC is enabled

A flaw was found in dnsmasq. A heap-based buffer overflow was discovered in the way RRSets are sorted before validating with DNSSEC data. An attacker on the network, who can forge DNS replies such as that they are accepted as valid, could use this flaw to cause a buffer overflow with arbitrary da...

DEBIAN-CVE-2020-25829

An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5. A remote attacker can cause the cached records for a given name to be updated to the Bogus DNSSEC validation state, instead of their actual DNSSEC Secure state, via a DNS ANY query. This result...

PowerDNS Recursor Input Validation Error Vulnerability

PowerDNS Recursor pdnsrecursor is a domain name resolution server from the Dutch company PowerDNS. A security vulnerability exists in PowerDNS Recursor versions 4.1.0 through 4.3.0 that stems from a failure to properly validate DNSSEC signatures. An attacker could exploit the vulnerability to...

DNSSEC validation fails when incorrect response to DNSKEY query is sent on Windows Server 2012 R2-based DNS server

DNSSEC validation fails when incorrect response to DNSKEY query is sent on Windows Server 2012 R2-based DNS server This article describes an issue in which the Domain Name System Security Extensions DNSSEC validation fails on a Windows Server 2012 R2-based DNS server. Before you install this...

The vulnerability of the DNS resolver, knot resolver, arises due to insufficient validation of input data. This allows attackers to convert a domain protected by DNSSEC into a domain that is no longer protected by DNSSEC.

The vulnerability of the DNS resolver, Knot Resolver, exists due to insufficient validation of input data. Exploiting this vulnerability could allow a malicious actor, operating remotely, to convert a domain protected by DNSSEC into a domain that is no longer protected by DNSSEC...

Google & Mozilla ban Avast security extensions over data snooping

By Sudais In this specific case, it was Avast & AVG Security whose two browser extensions each have been found spying on users... This is a post from HackRead.com Read the original post: Google & Mozilla ban Avast security extensions over data snooping...

systemd: systemd-resolved allows unprivileged users to configure DNS

An improper authorization flaw was discovered in systemd-resolved in the way it configures the exposed DBus interface org.freedesktop.resolve1. An unprivileged local attacker could call all DBus methods, even when marked as privileged operations. An attacker could abuse this flaw by changing the...

USN-3715-1 dns-root-data update

This update adds the latest DNSSEC validation trust anchor required for the upcoming Root Zone KSK Rollover and refreshes the list of root hints...

ALPINE-CVE-2017-15107

A vulnerability was found in the implementation of DNSSEC in Dnsmasq up to and including 2.78. Wildcard synthesized NSEC records could be improperly interpreted to prove the non-existence of hostnames that actually exist...

DEBIAN-CVE-2017-15107

A vulnerability was found in the implementation of DNSSEC in Dnsmasq up to and including 2.78. Wildcard synthesized NSEC records could be improperly interpreted to prove the non-existence of hostnames that actually exist...

UBUNTU-CVE-2017-15094

An issue has been found in the DNSSEC parsing code of PowerDNS Recursor from 4.0.0 up to and including 4.0.6 leading to a memory leak when parsing specially crafted DNSSEC ECDSA keys. These keys are only parsed when validation is enabled by setting dnssec to a value other than off or...

UBUNTU-CVE-2017-15090

An issue has been found in the DNSSEC validation component of PowerDNS Recursor from 4.0.0 and up to and including 4.0.6, where the signatures might have been accepted as valid even if the signed data was not in bailiwick of the DNSKEY used to sign it. This allows an attacker in position of...