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OpenAdvisories
High ALAS2-2025-2751 2 CVEs

Important: bind security update (Amazon Linux 2)

Published Jan 30, 2025 · Updated Feb 4, 2025

Summary

Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2024-12705: Clients using DNS-over-HTTPS (DoH) can exhaust a DNS resolver's CPU and/or memory by flooding it with crafted valid or invalid HTTP/2 traffic. This issue affects BIND 9 versions 9.18.0 through 9.18.32, 9.20.0 through 9.20.4, 9.21.0 through 9.21.3, and 9.18.11-S1 through 9.18.32-S1. CVE-2024-11187: It is possible to construct a zone such that some queries to it will generate responses containing numerous records in the Additional section. An attacker sending many such queries can cause either the authoritative server itself or an independent resolver to use disproportionate resources processing the queries. Zones will usually need to have been deliberately crafted to attack this exposure. This issue affects BIND 9 versions 9.11.0 through 9.11.37, 9.16.0 through 9.16.50, 9.18.0 through 9.18.32, 9.20.0 through 9.20.4, 9.21.0 through 9.21.3, 9.11.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.50-S1, and 9.18.11-S1 through 9.18.32-S1.

Fixed packages 17

ReleasePackageFixed in
Amazon Linux · 2 bind 32:9.11.4-26.P2.amzn2.13.11
Amazon Linux · 2 bind-chroot 32:9.11.4-26.P2.amzn2.13.11
Amazon Linux · 2 bind-debuginfo 32:9.11.4-26.P2.amzn2.13.11
Amazon Linux · 2 bind-devel 32:9.11.4-26.P2.amzn2.13.11
Amazon Linux · 2 bind-export-devel 32:9.11.4-26.P2.amzn2.13.11
Amazon Linux · 2 bind-export-libs 32:9.11.4-26.P2.amzn2.13.11
Amazon Linux · 2 bind-libs 32:9.11.4-26.P2.amzn2.13.11
Amazon Linux · 2 bind-libs-lite 32:9.11.4-26.P2.amzn2.13.11
Amazon Linux · 2 bind-license 32:9.11.4-26.P2.amzn2.13.11
Amazon Linux · 2 bind-lite-devel 32:9.11.4-26.P2.amzn2.13.11
Amazon Linux · 2 bind-pkcs11 32:9.11.4-26.P2.amzn2.13.11
Amazon Linux · 2 bind-pkcs11-devel 32:9.11.4-26.P2.amzn2.13.11
Amazon Linux · 2 bind-pkcs11-libs 32:9.11.4-26.P2.amzn2.13.11
Amazon Linux · 2 bind-pkcs11-utils 32:9.11.4-26.P2.amzn2.13.11
Amazon Linux · 2 bind-sdb 32:9.11.4-26.P2.amzn2.13.11
Amazon Linux · 2 bind-sdb-chroot 32:9.11.4-26.P2.amzn2.13.11
Amazon Linux · 2 bind-utils 32:9.11.4-26.P2.amzn2.13.11

Vulnerabilities 2

  • High 7.5
    CVE-2024-11187 EPSS 16%

    Many records in the additional section cause CPU exhaustion

    It is possible to construct a zone such that some queries to it will generate responses containing numerous records in the Additional section. An attacker sending many such queries can cause either the authoritative server itself or an independent resolver to…

  • High 7.5
    CVE-2024-12705 EPSS 19%

    DNS-over-HTTPS implementation suffers from multiple issues under heavy query load

    Clients using DNS-over-HTTPS (DoH) can exhaust a DNS resolver's CPU and/or memory by flooding it with crafted valid or invalid HTTP/2 traffic. This issue affects BIND 9 versions 9.18.0 through 9.18.32, 9.20.0 through 9.20.4, 9.21.0 through 9.21.3, and 9.18.11…

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2024-11187.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2024-12705.html