BIND named Crashes with DNS64 and Serve-Stale Interaction
CVE-2023-5679

7.5HIGH

Key Information:

Vendor

Isc
Status
Bind 9
Vendor
CVE Published:
13 February 2024

Badges

👾 Exploit Exists

What is CVE-2023-5679?

The vulnerability arises from a problematic interaction between the DNS64 and serve-stale features in BIND 9. When both features are enabled during recursive DNS resolution, the named process may experience a crash due to an assertion failure. This could potentially lead to disrupted DNS service for affected users. The issue affects several versions of BIND 9 from 9.16.12 to 9.16.45, as well as a range of subversions specific to different configurations. Users are encouraged to review their BIND versions and apply necessary mitigations or updates.

Affected Version(s)

BIND 9 9.16.12 <= 9.16.45

BIND 9 9.18.0 <= 9.18.21

BIND 9 9.19.0 <= 9.19.19

References

https://kb.isc.org/docs/cve-2023-5679
vendor-advisory
http://www.openwall.com/lists/oss-security/2024/02/13/1
https://lists.fedoraproject.org/archives/list/package-ann...

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

.