QID 15153

Date Published: 2024-03-11

QID 15153: ISC BIND Denial of Service (DoS) Vulnerability (CVE-2023-6516)

ISC BIND (Berkley Internet Domain Name) is an implementation of DNS protocols.
Specific recursive query patterns may lead to an out-of-memory condition.

Affected versions:
BIND 9.16.0 - 9.16.45
BIND Supported Preview Edition 9.16.8-S1 - 9.16.45-S1

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

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

By exploiting this flaw, an attacker can cause the amount of memory used by a named resolver to go well beyond the configured max-cache-size limit. The effectiveness of the attack depends on a number of environmental factors, but in the worst case the attacker can exhaust all available memory on the host running named, leading to a denial-of-service condition.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as High - 7.8 severity.
    • Solution
    Customers are advised to upgrade to the patched version latest release of CVE-2023-6516
    Vendor References

    CVEs related to QID 15153

    CVE-2023-6516 |
    Software Advisories
    Advisory ID Software Component Link
    CVE-2023-6516 URL Logo kb.isc.org/docs/cve-2023-6516
    By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].