Denial of service vulnerability in PowerDNS Recursor allows authoritative servers to be marked unavailable.This issue affects Recursor: through 4.6.5, through 4.7.4 , through 4.8.3.

The remote openSUSE 15 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2024:0048-1 advisory.

  - Denial of service vulnerability in PowerDNS Recursor allows authoritative servers to be marked     unavailable.This issue affects Recursor: through 4.6.5, through 4.7.4 , through 4.8.3. (CVE-2023-26437)

  - 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 records, the     protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG     records. (CVE-2023-50387)

  - 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 implies that an     algorithm must perform thousands of iterations of a hash function in certain situations. (CVE-2023-50868)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 15 host has a package installed that is affected by a vulnerability as referenced in the openSUSE- SU-2023:0101-1 advisory.

  - Denial of service vulnerability in PowerDNS Recursor allows authoritative servers to be marked     unavailable.This issue affects Recursor: through 4.6.5, through 4.7.4 , through 4.8.3. (CVE-2023-26437)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 38 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2023-680b2e6af5 advisory.

    - Update to 4.8.4

    Release notes: https://doc.powerdns.com/recursor/changelog/4.8.html

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 37 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2023-0c1aaa76b6 advisory.

    - Update to 4.8.4

    Release notes: https://doc.powerdns.com/recursor/changelog/4.8.html

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the dc33795f-ced7-11ed-b1fe-6805ca2fa271 advisory.

  - PowerDNS Team reports: PowerDNS Security Advisory 2023-02: Deterred spoofing attempts             can lead     to authoritative servers being marked unavailable (CVE-2023-26437)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
190619	openSUSE 15 Security Update : pdns-recursor (openSUSE-SU-2024:0048-1)	Nessus	SuSE Local Security Checks	high
175027	openSUSE 15 Security Update : pdns-recursor (openSUSE-SU-2023:0101-1)	Nessus	SuSE Local Security Checks	medium
174364	Fedora 38 : pdns-recursor (2023-680b2e6af5)	Nessus	Fedora Local Security Checks	medium
174198	Fedora 37 : pdns-recursor (2023-0c1aaa76b6)	Nessus	Fedora Local Security Checks	medium
173716	FreeBSD : powerdns-recursor -- denial of service (dc33795f-ced7-11ed-b1fe-6805ca2fa271)	Nessus	FreeBSD Local Security Checks	medium

Detections

Analytics

CVE-2023-26437

medium

Tenable Plugins

high

medium

medium

medium

medium