QID 15156

Date Published: 2024-03-11

QID 15156: ISC BIND Security Update (CVE-2023-5679)

ISC BIND (Berkley Internet Domain Name) is an implementation of DNS protocols.

Affected versions:
BIND 9.16.12 - 9.16.45
BIND 9.18.0 - 9.18.21
BIND 9.19.0 - 9.19.19
BIND Supported Preview Edition 9.16.12-S1 - 9.16.45-S1
BIND Supported Preview Edition 9.18.11-S1 - 9.18.21-S1

Patched Versions:
BIND 9.16.48
BIND 9.18.24
BIND 9.19.21
BIND Supported Preview Edition 9.16.48-S1
BIND Supported Preview Edition 9.18.24-S1

QID Detection Logic:
This unauthenticated check detects vulnerable systems by fetching the version information from the BIND service using banner.

By querying a DNS64-enabled resolver for domain names triggering serve-stale, an attacker can cause named to crash with an assertion failure.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as Medium - 3.6 severity.
    • Solution
    Customers are advised to upgrade to the patched version latest release of CVE-2023-5679.
    Workaround:
    Disabling serve-stale (with stale-cache-enable no; and stale-answer-enable no;) and/or disabling dns64 makes the faulty code path impossible to reach, preventing this flaw from being exploitable.
    Vendor References

    CVEs related to QID 15156

    CVE-2023-5679 |
    Software Advisories
    Advisory ID Software Component Link
    CVE-2023-5679 URL Logo kb.isc.org/docs/cve-2023-5679
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