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OpenAdvisories
High ALAS2-2023-2273 1 CVE

Important: bind security update (Amazon Linux 2)

Published Sep 27, 2023 · Updated Oct 5, 2023

Summary

Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2023-3341: The code that processes control channel messages sent to `named` calls certain functions recursively during packet parsing. Recursion depth is only limited by the maximum accepted packet size; depending on the environment, this may cause the packet-parsing code to run out of available stack memory, causing `named` to terminate unexpectedly. Since each incoming control channel message is fully parsed before its contents are authenticated, exploiting this flaw does not require the attacker to hold a valid RNDC key; only network access to the control channel's configured TCP port is necessary. This issue affects BIND 9 versions 9.2.0 through 9.16.43, 9.18.0 through 9.18.18, 9.19.0 through 9.19.16, 9.9.3-S1 through 9.16.43-S1, and 9.18.0-S1 through 9.18.18-S1.

Fixed packages 17

ReleasePackageFixed in
Amazon Linux · 2 bind 32:9.11.4-26.P2.amzn2.13.5
Amazon Linux · 2 bind-chroot 32:9.11.4-26.P2.amzn2.13.5
Amazon Linux · 2 bind-debuginfo 32:9.11.4-26.P2.amzn2.13.5
Amazon Linux · 2 bind-devel 32:9.11.4-26.P2.amzn2.13.5
Amazon Linux · 2 bind-export-devel 32:9.11.4-26.P2.amzn2.13.5
Amazon Linux · 2 bind-export-libs 32:9.11.4-26.P2.amzn2.13.5
Amazon Linux · 2 bind-libs 32:9.11.4-26.P2.amzn2.13.5
Amazon Linux · 2 bind-libs-lite 32:9.11.4-26.P2.amzn2.13.5
Amazon Linux · 2 bind-license 32:9.11.4-26.P2.amzn2.13.5
Amazon Linux · 2 bind-lite-devel 32:9.11.4-26.P2.amzn2.13.5
Amazon Linux · 2 bind-pkcs11 32:9.11.4-26.P2.amzn2.13.5
Amazon Linux · 2 bind-pkcs11-devel 32:9.11.4-26.P2.amzn2.13.5
Amazon Linux · 2 bind-pkcs11-libs 32:9.11.4-26.P2.amzn2.13.5
Amazon Linux · 2 bind-pkcs11-utils 32:9.11.4-26.P2.amzn2.13.5
Amazon Linux · 2 bind-sdb 32:9.11.4-26.P2.amzn2.13.5
Amazon Linux · 2 bind-sdb-chroot 32:9.11.4-26.P2.amzn2.13.5
Amazon Linux · 2 bind-utils 32:9.11.4-26.P2.amzn2.13.5

Vulnerabilities 1

  • High 7.5

    A stack exhaustion flaw in control channel code may cause named to terminate unexpectedly

    The code that processes control channel messages sent to `named` calls certain functions recursively during packet parsing. Recursion depth is only limited by the maximum accepted packet size; depending on the environment, this may cause the packet-parsing co…

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2023-3341.html