QID 15157

Date Published: 2024-03-11

QID 15157: ISC BIND Excessive CPU Load Vulnerability (CVE-2023-4408)

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

Affected versions:
BIND 9.0.0 - 9.16.45
BIND 9.18.0 - 9.18.21
BIND 9.19.0 - 9.19.19
BIND Supported Preview Edition 9.9.3-S1 - 9.11.37-S1
BIND Supported Preview Edition 9.16.8-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 flooding the target server with queries exploiting this flaw an attacker can significantly impair the server's performance, effectively denying legitimate clients access to the DNS resolution service.

CVSS V3 rated as High - 7.5 severity.

CVSS V2 rated as Medium - 4.6 severity.

Solution

Customers are advised to upgrade to the patched version latest release of CVE-2023-4408.

Vendor References

CVE-2023-4408 - kb.isc.org/docs/cve-2023-4408

CVEs related to QID 15157

CVE-2023-4408 |

Software Advisories

Advisory ID	Software	Component	Link
CVE-2023-4408			kb.isc.org/docs/cve-2023-4408

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