CVE-2022-38177 HIGH

CVE-2022-38177: Memory leak in ECDSA DNSSEC verification code

Vendor Isc
Product BIND9
Published September 21, 2022
Last update May 28, 2025

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

By spoofing the target resolver with responses that have a malformed ECDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources.

Key dates

02Disclosure timeline

September 21, 2022 CVE published
May 28, 2025 Record updated