CVE-2022-0396

DoS from specifically crafted TCP packets

Description

BIND 9.16.11 -> 9.16.26, 9.17.0 -> 9.18.0 and versions 9.16.11-S1 -> 9.16.26-S1 of the BIND Supported Preview Edition. Specifically crafted TCP streams can cause connections to BIND to remain in CLOSE_WAIT status for an indefinite period of time, even after the client has terminated the connection.

Remediation

Solution:

  • Upgrade to the patched release most closely related to your current version of BIND: 9.16.27 9.18.1 BIND Supported Preview Edition is a special feature-preview branch of BIND provided to eligible ISC support customers. 9.16.27-S1

Workaround:

  • To mitigate this issue in all affected versions of BIND, use the default setting of keep-response-order { none; }. Active exploits: We are not aware of any active exploits.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.01%
Vendor Advisory fedoraproject.org Vendor Advisory gentoo.org Vendor Advisory isc.org
Affected: ISC BIND
Published at:
Updated at:

References

Link Tags
https://kb.isc.org/v1/docs/cve-2022-0396 mitigation vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NYD7US4HZRFUGAJ66ZTHFBYVP5N3OQBY/ mailing list third party advisory vendor advisory
https://security.netapp.com/advisory/ntap-20220408-0001/ third party advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf third party advisory patch
https://security.gentoo.org/glsa/202210-25 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2022-0396?
CVE-2022-0396 has been scored as a medium severity vulnerability.
How to fix CVE-2022-0396?
To fix CVE-2022-0396: Upgrade to the patched release most closely related to your current version of BIND: 9.16.27 9.18.1 BIND Supported Preview Edition is a special feature-preview branch of BIND provided to eligible ISC support customers. 9.16.27-S1
Is CVE-2022-0396 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-0396 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-2022-0396?
CVE-2022-0396 affects ISC BIND.
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