Ubuntu Security Notice 6657-2 - USN-6657-1 fixed several vulnerabilities in Dnsmasq. This update provides the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner discovered that Dnsmasq incorrectly handled validating DNSSEC messages. A remote attacker could possibly use this issue to cause Dnsmasq to consume resources, leading to a denial of service. It was discovered that Dnsmasq incorrectly handled preparing an NSEC3 closest encloser proof. A remote attacker could possibly use this issue to cause Dnsmasq to consume resources, leading to a denial of service. It was discovered that Dnsmasq incorrectly set the maximum EDNS.0 UDP packet size as required by DNS Flag Day 2020. This issue only affected Ubuntu 23.10.
1fe74e528f9c677caecbbdfcd678431e4752e4565e8a9eb7cd614192a3dcc6e0Ubuntu Security Notice 6723-1 - Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner discovered that Bind incorrectly handled validating DNSSEC messages. A remote attacker could possibly use this issue to cause Bind to consume resources, leading to a denial of service. It was discovered that Bind incorrectly handled preparing an NSEC3 closest encloser proof. A remote attacker could possibly use this issue to cause Bind to consume resources, leading to a denial of service.
6e047bb3283e58c0f8d840f22e9c0053696975f6a4992368ea7aec56ce6a4cc7Ubuntu Security Notice 6665-1 - Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner discovered that Unbound incorrectly handled validating DNSSEC messages. A remote attacker could possibly use this issue to cause Unbound to consume resources, leading to a denial of service. It was discovered that Unbound incorrectly handled preparing an NSEC3 closest encloser proof. A remote attacker could possibly use this issue to cause Unbound to consume resources, leading to a denial of service.
247e0c613315c524f7a23eca5cd0d2daffd570c3ffc7c235478e29feb918a658Debian Linux Security Advisory 5633-1 - It was discovered that malformed DNSSEC records within a DNS zone could result in denial of service against Knot Resolver, a caching, DNSSEC- validating DNS resolver.
8e6d005043bd7886936a3247ec7c5c1129b630b1592e9f24492ea9653d4467d0Ubuntu Security Notice 6657-1 - Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner discovered that Dnsmasq icorrectly handled validating DNSSEC messages. A remote attacker could possibly use this issue to cause Dnsmasq to consume resources, leading to a denial of service. It was discovered that Dnsmasq incorrectly handled preparing an NSEC3 closest encloser proof. A remote attacker could possibly use this issue to cause Dnsmasq to consume resources, leading to a denial of service.
46f1a09bc8e779b0877ec272386957a7de5ad50e209a3024756ed199c3923006Ubuntu Security Notice 6642-1 - Shoham Danino, Anat Bremler-Barr, Yehuda Afek, and Yuval Shavitt discovered that Bind incorrectly handled parsing large DNS messages. A remote attacker could possibly use this issue to cause Bind to consume resources, leading to a denial of service. Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner discovered that Bind incorrectly handled validating DNSSEC messages. A remote attacker could possibly use this issue to cause Bind to consume resources, leading to a denial of service.
59690fe75ddf72adb23e500a05f4e810c75b29c755af18781f7010d4def3deacDebian Linux Security Advisory 5626-1 - It was discovered that malformed DNSSEC records within a DNS zone could result in denial of service against PDNS Recursor, a resolving name server.
49eaeb41d9120ce6fe9d1df8ab49ae3be8aab753012780b8c6b75059b99b0463Debian Linux Security Advisory 5621-1 - Several vulnerabilities were discovered in BIND, a DNS server implementation, which may result in denial of service.
c8c07e1985655854dd15f5e76e52c42de91372742f9064ab63788fb3a08e6280Debian Linux Security Advisory 5620-1 - Two vulnerabilities were discovered in unbound, a validating, recursive, caching DNS resolver. Specially crafted DNSSEC answers could lead unbound down a very CPU intensive and time costly DNSSEC (CVE-2023-50387) or NSEC3 hash (CVE-2023-50868) validation path, resulting in denial of service.
2128e1a0af0c67ffe2e1ffb50d3a9242efd9702a50aab4893ca90d85956fa4c9Ubuntu Security Notice 6633-1 - Shoham Danino, Anat Bremler-Barr, Yehuda Afek, and Yuval Shavitt discovered that Bind incorrectly handled parsing large DNS messages. A remote attacker could possibly use this issue to cause Bind to consume resources, leading to a denial of service. Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner discovered that Bind incorrectly handled validating DNSSEC messages. A remote attacker could possibly use this issue to cause Bind to consume resources, leading to a denial of service.
054b5c6621a2c15204c6e7c406399951136064dab698608de345f5ebc5be679d
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