QID 352404

Date Published: 2021-06-24

QID 352404: Amazon Linux Security Advisory for bind: ALAS2-2021-1651

<DIV ID="issue_overview"> incremental zone transfers (ixfr) provide a way of transferring changed portion(s) of a zone between servers.
An ixfr stream containing soa records with an owner name other than the transferred zone's apex may cause the receiving named server to inadvertently remove the soa record for the zone in question from the zone database.
This leads to an assertion failure when the next soa refresh query for that zone is made. (
cve-2021-25214 ) </DIV>

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.

Allows unauthorized disclosure of information; allows unauthorized modification; allows disruption of service.

  • CVSS V3 rated as High - 6.5 severity.
  • CVSS V2 rated as Medium - 4 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2-2021-1651 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 352404

    CVE-2021-25214 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2-2021-1651 Amazon Linux 2 URL Logo alas.aws.amazon.com/AL2/ALAS-2021-1651.html
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