Memory leaks in EdDSA DNSSEC verification code

CVE-2022-38178
7.5HIGH

Key Information

Vendor
Isc
Status
Bind9
Vendor
CVE Published:
21 September 2022

Badges

👾 Exploit Exists

Summary

By spoofing the target resolver with responses that have a malformed EdDSA 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.

Affected Version(s)

BIND9 = Open Source Branch 9.9 9.9.12 through versions up to and including 9.9.13

BIND9 = Open Source Branch 9.10 9.10.7 through versions up to and including 9.10.8

BIND9 = Open Source Branches 9.11 through 9.16 9.11.3 through versions before 9.16.33

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 👾

    Exploit exists.

  • Vulnerability published.

  • Vulnerability Reserved.

Collectors

NVD DatabaseMitre Database
.