Important: unbound

Issue Overview: Certain DNSSEC aspects of the DNS protocol in RFC 4035 and related RFCs allow remote attackers to cause a denial of service CPU consumption via one or more DNSSEC responses when there is a zone with many DNSKEY and RRSIG records, aka the "KeyTrap" issue. The protocol specification...

Fedora 38 : bind / bind-dyndb-ldap (2024-fae88b73eb)

The remote Fedora 38 host has packages installed that are affected by multiple vulnerabilities as referenced in the FEDORA-2024-fae88b73eb advisory. Security Fixes - Validating DNS messages containing a lot of DNSSEC signatures could cause excessive CPU load, leading to a denial-of-service...

OESA-2024-1210 unbound security update

Unbound is a validating, recursive, caching DNS resolver. It is designed to be fast and lean and incorporates modern features based on open standards. To help increase online privacy, Unbound supports DNS-over-TLS which allows clients to encrypt their communication. Unbound is available for most...

Fedora 38 : unbound (2024-c967c7d287)

The remote Fedora 38 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2024-c967c7d287 advisory. - Fix CVE-2023-50387, DNSSEC verification complexity can be exploited to exhaust CPU resources and stall DNS resolvers. - Fix CVE-2023-50868, NSEC3...

Fedora 38 : dnsmasq (2024-e00eceb11c)

The remote Fedora 38 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2024-e00eceb11c advisory. - https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html Tenable has extracted the preceding description block directly from t...

Ubuntu: Security Advisory (USN-6665-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2024 Greenbone AG 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-only ifdescription...

USN-6665-1: Unbound vulnerabilities

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. CVE-2023-50387 It was discovered that...

USN-6665-1 unbound vulnerabilities

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. CVE-2023-50387 It was discovered that...

unbound security update

1.16.2-5.2 - bind9: KeyTrap - Extreme CPU consumption in DNSSEC validator CVE-2023-50387 - bind9: Preparing an NSEC3 closest encloser proof can exhaust CPU resources CVE-2023-50868...

unbound security update

1.16.2-3.1 - Fix DNSSEC validation vulnerabilities which can lead to DoS in trivially orchestrated attacks CVE-2023-50387 and CVE-2023-50868...

Oracle Linux 8 : unbound (ELSA-2024-0965)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-0965 advisory. - bind9: KeyTrap - Extreme CPU consumption in DNSSEC validator CVE-2023-50387 Tenable has extracted the preceding description block directly from the...

Oracle Linux 9 : unbound (ELSA-2024-0977)

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-0977 advisory. 1.16.2-3.1 - Fix DNSSEC validation vulnerabilities which can lead to DoS in trivially orchestrated attacks CVE-2023-50387 and CVE-2023-50868 Tenable ha...

Ubuntu 20.04 LTS / 22.04 LTS / 23.10 : Unbound vulnerabilities (USN-6665-1)

The remote Ubuntu 20.04 LTS / 22.04 LTS / 23.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6665-1 advisory. Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner discovered that Unbound incorrectly handled validating DNSSEC...

AlmaLinux 8 : unbound (ALSA-2024:0965)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2024:0965 advisory. - Certain DNSSEC aspects of the DNS protocol in RFC 4033, 4034, 4035, 6840, and related RFCs allow remote attackers to cause a denial of service CPU...

[SECURITY] [DSA 5633-1] knot-resolver security update

------------------------------------------------------------------------- Debian Security Advisory DSA-5633-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff February 27, 2024 https://www.debian.org/security/faq -...

Important: Red Hat Security Advisory: unbound security update

An update for unbound is now available for Red Hat Enterprise Linux 8.8 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

bind9: KeyTrap - Extreme CPU consumption in DNSSEC validator

Processing specially crafted responses coming from DNSSEC-signed zones can lead to uncontrolled CPU usage, leading to a Denial of Service in the DNSSEC-validating resolver side. This vulnerability applies only for systems where DNSSEC validation is enabled...

USN-6657-1: Dnsmasq vulnerabilities

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. CVE-2023-50387 It was discovered that...

bind9: Preparing an NSEC3 closest encloser proof can exhaust CPU resources

A flaw was found in bind9. By flooding a DNSSEC resolver with responses coming from a DNSEC-signed zone using NSEC3, an attacker can lead the targeted resolver to a CPU exhaustion, further leading to a Denial of Service on the targeted host. This vulnerability applies only for systems where DNSSE...

Important: Red Hat Security Advisory: unbound security update

An update for unbound is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from t...