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FreeBSD: (Multiple Advisories) (CVE-2023-50868): powerdns-recursor -- Multiple Vulnerabilities

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FreeBSD: (Multiple Advisories) (CVE-2023-50868): powerdns-recursor -- Multiple Vulnerabilities

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
02/14/2024
Created
02/16/2024
Added
02/14/2024
Modified
02/16/2024

Description

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.

Solution(s)

  • freebsd-upgrade-package-bind9-devel
  • freebsd-upgrade-package-bind916
  • freebsd-upgrade-package-bind918
  • freebsd-upgrade-package-dnsmasq
  • freebsd-upgrade-package-dnsmasq-devel
  • freebsd-upgrade-package-powerdns-recursor
  • freebsd-upgrade-package-unbound

References

  • CVE-2023-50868

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