CVE-2024-4076

Assertion failure when serving both stale cache data and authoritative zone content

Description

Client queries that trigger serving stale data and that also require lookups in local authoritative zone data may result in an assertion failure. This issue affects BIND 9 versions 9.16.13 through 9.16.50, 9.18.0 through 9.18.27, 9.19.0 through 9.19.24, 9.11.33-S1 through 9.11.37-S1, 9.16.13-S1 through 9.16.50-S1, and 9.18.11-S1 through 9.18.27-S1.

Remediation

Solution:

  • Upgrade to the patched release most closely related to your current version of BIND 9: 9.18.28, 9.20.0, or 9.18.28-S1.

Workaround:

  • Disabling serve-stale answers mitigates this issue.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.04%
Vendor Advisory isc.org
Affected: ISC BIND 9
Published at:
Updated at:

References

Link Tags
https://kb.isc.org/docs/cve-2024-4076 vendor advisory
http://www.openwall.com/lists/oss-security/2024/07/23/1
http://www.openwall.com/lists/oss-security/2024/07/31/2
https://security.netapp.com/advisory/ntap-20240731-0001/

Frequently Asked Questions

What is the severity of CVE-2024-4076?
CVE-2024-4076 has been scored as a high severity vulnerability.
How to fix CVE-2024-4076?
To fix CVE-2024-4076: Upgrade to the patched release most closely related to your current version of BIND 9: 9.18.28, 9.20.0, or 9.18.28-S1.
Is CVE-2024-4076 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-4076 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-4076?
CVE-2024-4076 affects ISC BIND 9.
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