QID 15137

Date Published: 2023-05-29

QID 15137: ISC BIND Memory Leak Vulnerability (CVE-2022-38177)

The DNSSEC verification code for the EdDSA algorithm leaks memory when there is a signature length mismatch.

Affected versions:
BIND 9.8.4 - 9.16.32
BIND 9.9.4-S1 - 9.11.37-S1

BIND 9.16.8-S1 - 9.16.32-S1

Patched Versions:
BIND 9.16.33
BIND 9.16.33-S1

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

Successfully exploitation could affects integrity, availability, confidentiality

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as Medium - 5 severity.
    • Solution
    Customers are advised to upgrade to the patched version 9.16.33, 9.16.33-S1 or latest release of ISC BIND.
    Workaround:
    Disable the following algorithms in your configuration using the disable-algorithms option: ECDSAP256SHA256, ECDSAP384SHA384.
    Vendor References

    CVEs related to QID 15137

    CVE-2022-38177 |
    Software Advisories
    Advisory ID Software Component Link
    CVE-2022-38177 URL Logo kb.isc.org/v1/docs/cve-2022-38177
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