Denial of Service Vulnerability in BIND by ISC
CVE-2022-0635

7.5HIGH

Key Information:

Vendor
Isc
Status
Bind
Vendor
CVE Published:
23 March 2022

Summary

A denial of service vulnerability exists in BIND 9.18.0 where the named process can crash after receiving a specific sequence of queries. This crash stems from a failed assertion check, leading to potential disruptions in DNS service availability. Users of affected versions should take immediate action to mitigate risks by updating to the latest version to ensure system stability and security.

Affected Version(s)

BIND Open Source Branch 9.18 9.18.0

References

https://kb.isc.org/v1/docs/cve-2022-0635
x_refsource_CONFIRM
https://security.netapp.com/advisory/ntap-20220408-0001/
x_refsource_CONFIRM

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

  • Vulnerability published

  • Vulnerability Reserved

Credit

ISC would like to thank Vincent Levigneron of AFNIC for reporting this issue to us and for verifying the fix and workaround.
.