Memory leak in ECDSA DNSSEC verification code

CVE-2022-38177
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 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.

Affected Version(s)

BIND9 = Open Source Branches 9.8 through 9.16 9.8.4 through versions before 9.16.33

BIND9 = Supported Preview Branches 9.9-S through 9.11-S 9.9.4-S1 through versions up to and including 9.11.37-S1

BIND9 = Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.33-S1

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
.