openSUSE Security Update : bind (openSUSE-2021-386)

This update for bind fixes the following issues : - dnssec-keygen can no longer generate HMAC keys. Use tsig-keygen instead. bsc1180933 This update was imported from the SUSE:SLE-15:Update update project. C Tenable Network Security, Inc. The descriptive text and package checks in this plugin were...

SolarWinds Hack and the Case of DNS Security

It's not news that some of the top government agencies and companies in the world were victims of the SolarWinds attack. At this point, I can say it's the reason I didn't have a smoother transition back into work-life following a long vacation. As I understand it, the breaches happened after...

SolarWinds Hack and the Case of DNS Security

It's not news that some of the top government agencies and companies in the world were victims of the SolarWinds attack. At this point, I can say it's the reason I didn't have a smoother transition back into work-life following a long vacation. As I understand it, the breaches happened after...

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...

DEBIAN-CVE-2020-25683

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. A remote attacker, who can create valid DNS replies, could use this flaw 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: loose query name check in reply_query() makes forging replies easier for an off-path attacker

A flaw was found in dnsmasq. When getting a reply from a forwarded query, dnsmasq checks in forward.c:replyquery, which is the forwarded query that matches the reply, by only using a weak hash of the query name. Due to the weak hash CRC32 when dnsmasq is compiled without DNSSEC, SHA-1 when it is...

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: heap-based buffer overflow with large memcpy in sort_rrset() 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. This flaw allows a remote attacker, who can create valid DNS replies, to cause an overflow in a heap-allocated memory. This flaw is caused b...

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...

Security Advisory 2021-01-19-1 - dnsmasq multiple vulnerabilities (CVE-2020-25681, CVE-2020-25682, CVE-2020-25683, CVE-2020-25684, CVE-2020-25685, CVE-2020-25686, CVE-2020-25687)

DESCRIPTION Dnsmasq has two sets of vulnerabilities, one set of memory corruption issues handling DNSSEC and a second set of issues validating DNS responses. These vulnerabilities could allow an attacker to corrupt memory on the target device and perform cache poisoning attacks against the target...

NSA Releases Guidance on Encrypted DNS in Enterprise Environments  

The National Security Agency NSA has released an information sheet with guidance on adopting encrypted Domain Name System DNS over Hypertext Transfer Protocol over Transport Layer Security HTTPS, referred to as DNS over HTTPS DoH. When configured appropriately, strong enterprise DNS controls can...

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...

Akamai Drives New Standards and Enhances Authoritative DNS and Load Balancing Services

For more than 20 years, Akamai's customers have trusted our global edge platform to deliver their content, secure their web applications, and accelerate end-user experiences. As the basis for our mapping functions, Akamai DNS has always been essential to the reliability and performance of our...

Akamai, CISA, and CIS Join Forces to Improve SLTT Cyber Defenses

Cybercriminals continue to target U.S. state, local, tribal, and territorial SLTT government organizations. In 2019, there were more than 100 ransomware attacks -- including an attack on Baltimore's IT systems that locked out thousands of computers and disrupted nearly every city service. This...

OSV-2020-179 Heap-buffer-overflow in get16

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=20832 Crash type: Heap-buffer-overflow READ 2 Crash state: get16 searchvaliddns ndpisearchdns...

Innovation Driven by Operational Experience and Engineering Insight Deters NXNS Attacks

DNS and security have had a long and tangled relationship. The DNS has always been an attractive target since it's a network leverage point. At DNS OARC 30 in Bangkok in 2019, Akamai's Ralf Weber did a presentation called DNS Security: Past, Present, and Future It's Not Easy covering numerous DNS...

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...

DEBIAN-CVE-2020-12244

An issue has been found in PowerDNS Recursor 4.1.0 through 4.3.0 where records in the answer section of a NXDOMAIN response lacking an SOA were not properly validated in SyncRes::processAnswer, allowing an attacker to bypass DNSSEC validation...