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Amazon Linux AMI 2: CVE-2023-50868: Security patch for bind, dnsmasq, unbound (Multiple Advisories)

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Amazon Linux AMI 2: CVE-2023-50868: Security patch for bind, dnsmasq, unbound (Multiple Advisories)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
02/14/2024
Created
03/06/2024
Added
03/05/2024
Modified
05/01/2024

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)

  • amazon-linux-ami-2-upgrade-bind
  • amazon-linux-ami-2-upgrade-bind-chroot
  • amazon-linux-ami-2-upgrade-bind-debuginfo
  • amazon-linux-ami-2-upgrade-bind-devel
  • amazon-linux-ami-2-upgrade-bind-export-devel
  • amazon-linux-ami-2-upgrade-bind-export-libs
  • amazon-linux-ami-2-upgrade-bind-libs
  • amazon-linux-ami-2-upgrade-bind-libs-lite
  • amazon-linux-ami-2-upgrade-bind-license
  • amazon-linux-ami-2-upgrade-bind-lite-devel
  • amazon-linux-ami-2-upgrade-bind-pkcs11
  • amazon-linux-ami-2-upgrade-bind-pkcs11-devel
  • amazon-linux-ami-2-upgrade-bind-pkcs11-libs
  • amazon-linux-ami-2-upgrade-bind-pkcs11-utils
  • amazon-linux-ami-2-upgrade-bind-sdb
  • amazon-linux-ami-2-upgrade-bind-sdb-chroot
  • amazon-linux-ami-2-upgrade-bind-utils
  • amazon-linux-ami-2-upgrade-dnsmasq
  • amazon-linux-ami-2-upgrade-dnsmasq-debuginfo
  • amazon-linux-ami-2-upgrade-dnsmasq-utils
  • amazon-linux-ami-2-upgrade-python2-unbound
  • amazon-linux-ami-2-upgrade-python3-unbound
  • amazon-linux-ami-2-upgrade-unbound
  • amazon-linux-ami-2-upgrade-unbound-debuginfo
  • amazon-linux-ami-2-upgrade-unbound-devel
  • amazon-linux-ami-2-upgrade-unbound-libs

References

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