Important: unbound security update

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: 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 For more details about th...

CentOS 8 : unbound (CESA-2024:0965)

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-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...

Fedora 38 : pdns-recursor (2024-4e36df9dfd)

The remote Fedora 38 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2024-4e36df9dfd advisory. Update to latest upstream. Fixes CVE-2023-50387 and CVE-2023-50868 Tenable has extracted the preceding description block directly from the Fedora...

Fedora 39 : pdns-recursor (2024-b0f9656a76)

The remote Fedora 39 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2024-b0f9656a76 advisory. Update to latest upstream. Fixes CVE-2023-50387 and CVE-2023-50868 Tenable has extracted the preceding description block directly from the Fedora...

Debian dla-3736 : libunbound-dev - security update

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3736 advisory. ------------------------------------------------------------------------- Debian LTS Advisory DLA-3736-1 [email protected]...

Pi-hole FTLDNS < 5.25 Multiple DoS Vulnerabilities (KeyTrap)

Pi-hole FTLDNS 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 =...

Ubuntu 20.04 LTS : Bind vulnerabilities (USN-6642-1)

The remote Ubuntu 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6642-1 advisory. Shoham Danino, Anat Bremler-Barr, Yehuda Afek, and Yuval Shavitt discovered that Bind incorrectly handled parsing large DNS messages. A remote attacker...

Fedora 39 : dnsmasq (2024-e24211eff0)

The remote Fedora 39 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2024-e24211eff0 advisory. https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html Tenable has extracted the preceding description block directly from the...

Denial Of Service

dnsmasq is vulnerable to Denial of Service. The vulnerability due to KeyTrap issue when dealing with a zone that contains numerous DNSKEY DNS Key and RRSIG Resource Record Signature records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG...

MGASA-2024-0041 Updated dnsmasq packages fix security vulnerabilities

This updated dnsmasq package fixes security issues: Certain DNSSEC aspects of the DNS protocol allow a remote attacker to trigger a denial of service via extreme consumption of resource caused by DNSSEC query or response: - KeyTrap - Extreme CPU consumption in DNSSEC validator. CVE-2023-50387 -...

Debian dsa-5626 : pdns-recursor - security update

The remote Debian 12 host has a package installed that is affected by multiple vulnerabilities as referenced in the dsa-5626 advisory. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian Security Advisory DSA-5626-1...

Fedora 39 : unbound (2024-2e26eccfcb)

The remote Fedora 39 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2024-2e26eccfcb advisory. - https://nlnetlabs.nl/projects/unbound/security-advisories/ - Secure again control channel. Tenable has extracted the preceding description block...

FreeBSD : powerdns-recursor -- Multiple Vulnerabilities (e15ba624-cca8-11ee-84ca-b42e991fc52e)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the e15ba624-cca8-11ee-84ca-b42e991fc52e advisory. - Certain DNSSEC aspects of the DNS protocol in RFC 4033, 4034, 4035, 6840, and related RFCs...

Internet Bug Bounty: http: Reading unprocessed HTTP request with unbounded chunk extension allows DoS attacks

A vulnerability in Node.js HTTP servers allows an attacker to send a specially crafted HTTP request with chunked encoding, leading to resource exhaustion and denial of service DoS. The server reads an unbounded number of bytes from a single connection, exploiting the lack of limitations on chunk...

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-2023-50387

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 consumption via one or more DNSSEC responses, aka the "KeyTrap" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG...

Design/Logic Flaw

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 consumption via one or more DNSSEC responses, aka the "KeyTrap" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG...

Code injection

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-2023-50387

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 consumption via one or more DNSSEC responses, aka the "KeyTrap" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG...

CVE-2023-50868

CVE-2023-50868 is a DNSSEC-related denial of service issue (NSEC3 Closest Encloser proof) that can cause CPU exhaustion. The connected documents confirm impact on DNS implementations such as Unbound and BIND/BIND9 and describe the root cause as processors performing thousands of hash iterations f...