named may terminate unexpectedly when processing ECS options in repeated responses to iterative queries
CVE-2022-3488

7.5HIGH

Key Information:

Vendor
Isc
Status
Bind 9
Vendor
CVE Published:
26 January 2023

Badges

👾 Exploit Exists

Summary

A vulnerability exists in BIND DNS Server that can cause the service to terminate unexpectedly due to improper handling of repeated responses with ECS pseudo-options. Specifically, if the initial response is malformed, the resolver may abort with an assertion failure rather than processing the query correctly. This impacts BIND versions 9.11.4-S1 through 9.11.37-S1 and 9.16.8-S1 through 9.16.36-S1, potentially leading to significant service disruptions.

Affected Version(s)

BIND 9 9.11.4-S1 <= 9.11.37-S1

BIND 9 9.16.8-S1 <= 9.16.36-S1

References

https://kb.isc.org/docs/cve-2022-3488
vendor-advisory

CVSS V3.1

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

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

ISC would like to thank Infoblox for bringing this vulnerability to our attention.
.