QID 356401

Date Published: 2023-10-19

QID 356401: Amazon Linux Security Advisory for bind : ALAS2-2023-2273

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. (
( CVE-2023-3341)



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as Medium - 5.4 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2-2023-2273 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 356401

    CVE-2023-3341 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2-2023-2273 amazon linux 2 URL Logo alas.aws.amazon.com/AL2/ALAS-2023-2273.html
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