Ubuntu: Security Advisory (USN-6633-1)

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...

CVE-2023-50868

The Closest Encloser Proof aspect of the DNS protocol in RFC 5155 when RFC 9276 guidance is skipped allows remote attackers to cause a denial of service CPU consumption for SHA-1 computations via DNSSEC responses in a random subdomain attack, aka the "NSEC3" issue. The RFC 5155 specification...

ISC BIND Multiple DoS Vulnerabilities (CVE-2023-50387, CVE-2023-50868, KeyTrap) - Windows

ISC BIND is prone to multiple denial of service DoS vulnerabilities. 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 CPE = "cpe:/a:isc:bind"; i...

ISC BIND Multiple DoS Vulnerabilities (CVE-2023-50387, CVE-2023-50868, KeyTrap) - Linux

ISC BIND is prone to multiple denial of service DoS vulnerabilities. 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 CPE = "cpe:/a:isc:bind"; i...

Slackware Linux 15.0 / current dnsmasq Multiple Vulnerabilities (SSA:2024-044-02)

The version of dnsmasq installed on the remote host is prior to 2.90. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2024-044-02 advisory. - MITRE: CVE-2023-50387 DNSSEC verification complexity can be exploited to exhaust CPU resources and stall DNS resolvers...

CVE-2023-50868

The Closest Encloser Proof aspect of the DNS protocol in RFC 5155 when RFC 9276 guidance is skipped allows remote attackers to cause a denial of service CPU consumption for SHA-1 computations via DNSSEC responses in a random subdomain attack, aka the "NSEC3" issue. The RFC 5155 specification...

powerdns-recursor -- Multiple Vulnerabilities

[email protected] reports: CVE-2023-50868: The Closest Encloser Proof aspect of the DNS protocol in RFC 5155 when RFC 9276 guidance is skipped allows remote attackers to cause a denial of service CPU consumption for SHA-1 computations via DNSSEC responses in a random subdomain attack, aka the "NSEC3"...

CVE-2023-50868

The Closest Encloser Proof aspect of the DNS protocol in RFC 5155 when RFC 9276 guidance is skipped allows remote attackers to cause a denial of service CPU consumption for SHA-1 computations via DNSSEC responses in a random subdomain attack, aka the "NSEC3" issue. The RFC 5155 specification...

Debian dsa-5621 : bind9 - security update

The remote Debian 11 / 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5621 advisory. - The DNS message parsing code in named includes a section whose computational complexity is overly high. It does not cause problems for typical DNS traffic,...

CVE-2023-50868

The Closest Encloser Proof aspect of the DNS protocol in RFC 5155 when RFC 9276 guidance is skipped allows remote attackers to cause a denial of service CPU consumption for SHA-1 computations via DNSSEC responses in a random subdomain attack, aka the "NSEC3" issue. The RFC 5155 specification...

CVE-2023-50868

The Closest Encloser Proof aspect of the DNS protocol in RFC 5155 when RFC 9276 guidance is skipped allows remote attackers to cause a denial of service CPU consumption for SHA-1 computations via DNSSEC responses in a random subdomain attack, aka the "NSEC3" issue. The RFC 5155 specification...

CVE-2023-50868

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...

CVE-2023-50868

The Closest Encloser Proof aspect of the DNS protocol in RFC 5155 when RFC 9276 guidance is skipped allows remote attackers to cause a denial of service CPU consumption for SHA-1 computations via DNSSEC responses in a random subdomain attack, aka the "NSEC3" issue. The RFC 5155 specification...

ISC BIND 9.0.0 < 9.16.48 / 9.9.3-S1 < 9.16.48-S1 / 9.18.0 < 9.18.24 / 9.18.11-S1 < 9.18.24-S1 / 9.19.0 < 9.19.21 Vulnerability (cve-2023-50868)

The version of ISC BIND installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the cve-2023-50868 advisory. - The Closest Encloser Proof aspect of the DNS protocol in RFC 5155 when RFC 9276 guidance is skipped allows remote attacker...

Ubuntu 22.04 LTS / 23.10 : Bind vulnerabilities (USN-6633-1)

The remote Ubuntu 22.04 LTS / 23.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6633-1 advisory. Shoham Danino, Anat Bremler-Barr, Yehuda Afek, and Yuval Shavitt discovered that Bind incorrectly handled parsing large DNS messages. A remote...

DNSSEC validators -- denial-of-service/CPU exhaustion from KeyTrap and NSEC3 vulnerabilities

Simon Kelley reports: If DNSSEC validation is enabled, then an attacker who can force a DNS server to validate a specially crafted signed domain can use a lot of CPU in the validator. This only affects dnsmasq installations with DNSSEC enabled. Stichting NLnet Labs reports: The KeyTrap...

OPENSUSE-SU-2023:0101-1 Security update for pdns-recursor

This update for pdns-recursor fixes the following issues: pdns-recursor was updated to 4.6.6: fixes deterred spoofing attempts can lead to authoritative servers being marked unavailable boo1209897, CVE-2023-26437 Fixes in 4.6.5: When an expired NSEC3 entry is seen, move it to the front of the...

Debian: Security Advisory (DLA-48-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2023 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...

K00724442: BIG-IP DNS and GTM DNSSEC security exposure

Security Advisory Description The BIG-IP DNSSEC implementation returns an incorrect NSEC3 record for a DNS query for a resource record type, which does not exist at given name. The incorrect record indicates that only one of TXT/HINFO/RP resource record types exists at given name, even if A or AA...

K85021277: BIG-IP DNSSEC security exposure

Security Advisory Description When you configure security extensions for DNS DNSSEC on a virtual server, undisclosed requests result in incorrect NSEC3 records returned. This issue occurs when the following conditions are met: You use DNSSEC on an affected version of BIG-IP DNS formerly known as...