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...

MITRE: CVE-2023-50387 DNSSEC verification complexity can be exploited to exhaust CPU resources and stall DNS resolvers

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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...

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...

PT-2024-1751

Vulnerability Report Name of the Vulnerable Software and Affected Versions BIND versions 9.16.48-1 through 9.18.24-1 Unbound versions 1.19.1-alt1 PDNS Recursor versions 4.8.6-1 Knot Resolver versions 5.6.0-1+deb12u1 systemd affected versions not specified dnsmasq affected versions not specified...

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...

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-2023-50387)

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-2023-50387 advisory. - Certain DNSSEC aspects of the DNS protocol in RFC 4033, 4034, 4035, 6840, and related RFCs allow remote attackers to cause...

Medium: systemd

Issue Overview: systemd-resolved accepts records of DNSSEC-signed domains even when they have no signature, allowing man-in-the-middles or the upstream DNS resolver to manipulate records. CVE-2023-7008 Affected Packages: systemd Issue Correction: Run dnf update systemd --releasever 2023.3.2024020...

Amazon Linux 2023 : systemd, systemd-boot-unsigned, systemd-container (ALAS2023-2024-509)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2024-509 advisory. systemd-resolved accepts records of DNSSEC-signed domains even when they have no signature, allowing man- in-the-middles or the upstream DNS resolver to manipulate records. CVE-2023-7008 Tenable has...

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...

Fedora 38 : systemd (2024-c79658eedf)

The remote Fedora 38 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2024-c79658eedf advisory. - A bunch of fixes for various components: systemd, systemctl, hostnamectl, bootctl, systemd-networkd, systemd-network-generator, systemd-analyze,...

Fedora 39 : systemd (2024-b8312ca5b3)

The remote Fedora 39 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2024-b8312ca5b3 advisory. - A bunch of fixes for various components: systemd, systemctl, systemd-firstboot, systemd-repart, bootctl, systemd-networkd, systemd-network-generator,...

OESA-2024-1020 systemd security update

systemd is a system and service manager that runs as PID 1 and starts the rest of the system. Security Fixes: A vulnerability was found in systemd-resolved. This issue may allow systemd-resolved to accept records of DNSSEC-signed domains even when they have no signature, allowing man-in-the-middl...

NewStart CGSL MAIN 6.06 : dnsmasq Multiple Vulnerabilities (NS-SA-2023-0078)

The remote NewStart CGSL host, running version MAIN 6.06, has dnsmasq packages installed that are affected by multiple vulnerabilities: - A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in the way RRSets are sorted before validating with DNSSEC data. A...

Man-in-the-Middle (MitM)

systemd:sid is vulneranble to Man-in-the-Middle MitM. The vulnerability due to systemd-resolved accept records of DNSSEC-signed domains. It allows an attacker to manipulate records with out any signature...

CVE-2023-7008

A vulnerability was found in systemd-resolved. This issue may allow systemd-resolved to accept records of DNSSEC-signed domains even when they have no signature, allowing man-in-the-middles or the upstream DNS resolver to manipulate records...

AZL-32270 CVE-2023-7008 affecting package systemd for versions less than 250.3-22

A vulnerability was found in systemd-resolved. This issue may allow systemd-resolved to accept records of DNSSEC-signed domains even when they have no signature, allowing man-in-the-middles or the upstream DNS resolver to manipulate records...

AZL-32271 CVE-2023-7008 affecting package systemd-bootstrap for versions less than 250.3-13

A vulnerability was found in systemd-resolved. This issue may allow systemd-resolved to accept records of DNSSEC-signed domains even when they have no signature, allowing man-in-the-middles or the upstream DNS resolver to manipulate records...