CVE-2022-1183: Destroying a TLS session early causes assertion failure
Document version: 2.0
Posting date: 18 May 2022
Program impacted: BIND
Versions affected: BIND 9.18.0 -> 9.18.2 and 9.19.0 of the BIND 9.19 development branch
An assertion failure can be triggered if a TLS connection to a configured http TLS listener with a defined endpoint is destroyed too early.
On vulnerable configurations, the named daemon may, in some circumstances, terminate with an assertion failure. Vulnerable configurations are those that include a reference to
http within the
listen-on statements in their
named.conf. TLS is used by both DNS over TLS (DoT) and DNS over HTTPS (DoH), but configurations using DoT alone are unaffected.
CVSS Score: 7.0
CVSS Vector: CVSS v3.1 Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:F/RL:O/RC:C
For more information on the Common Vulnerability Scoring System and to obtain your specific environmental score please visit: https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:F/RL:O/RC:C&version=3.1.
No workarounds known.
We are not aware of any active exploits.
Upgrade to the patched release most closely related to your current version of BIND:
- BIND 9.18.3 (Current Stable)
- BIND 9.19.1 (Development)
Acknowledgments: ISC would like to thank Thomas Amgarten from arcade solutions ag for for discovering and reporting this issue.
Document revision history:
1.0 Early Notification, 11 May 2022
2.0 Public disclosure, 18 May 2022
See our BIND 9 Security Vulnerability Matrix for a complete listing of security vulnerabilities and versions affected.
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ISC patches only currently supported versions. When possible we indicate EOL versions affected. (For current information on which versions are actively supported, please see https://www.isc.org/download/.)
ISC Security Vulnerability Disclosure Policy:
Details of our current security advisory policy and practice can be found in the ISC Software Defect and Security Vulnerability Disclosure Policy at https://kb.isc.org/docs/aa-00861.
The Knowledgebase article https://kb.isc.org/docs/cve-2022-1183 is the complete and official security advisory document.
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