CVE-2022-3094: An UPDATE message flood may cause named to exhaust all available memory
First published: Tue Jan 24 2023(Updated: )
A flaw was found in Bind, where sending a flood of dynamic DNS updates may cause named to allocate large amounts of memory. This issue may cause named to exit due to a lack of free memory, resulting in a denial of service (DoS).
Credit: security-officer@isc.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/bind9.16 | <32:9.16.23-0.14.el8 | 32:9.16.23-0.14.el8 |
| redhat/bind | <32:9.16.23-11.el9 | 32:9.16.23-11.el9 |
| redhat/bind | <9.16.37 | 9.16.37 |
| redhat/bind | <9.18.11 | 9.18.11 |
| redhat/bind | <9.19.9 | 9.19.9 |
| ISC BIND 9 | >=9.16.0<9.16.37 | |
| ISC BIND 9 | >=9.18.0<9.18.11 | |
| ISC BIND 9 | >=9.19.0<9.19.9 | |
| ISC BIND 9 | =9.16.8-s1 | |
| ISC BIND 9 | =9.16.11-s1 | |
| ISC BIND 9 | =9.16.13-s1 | |
| ISC BIND 9 | =9.16.14-s1 | |
| ISC BIND 9 | =9.16.21-s1 | |
| ISC BIND 9 | =9.16.32-s1 | |
| ISC BIND 9 | =9.16.36-s1 |
Remedy
Upgrade to the patched release most closely related to your current version of BIND 9: 9.16.37, 9.18.11, 9.19.9, or 9.16.37-S1.
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2022-3094 https://nvd.nist.gov/vuln/detail/CVE-2022-3094 https://kb.isc.org/docs/cve-2022-3094
- https://bugzilla.redhat.com/show_bug.cgi?id=2164032
- https://access.redhat.com/errata/RHSA-2023:2792
- https://access.redhat.com/errata/RHSA-2023:2261
- https://access.redhat.com/security/cve/cve-2022-3094
- https://kb.isc.org/docs/cve-2022-3094
- https://exchange.xforce.ibmcloud.com/vulnerabilities/245430
- https://www.ibm.com/support/pages/node/7145492 (Advisory)
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2164506
- https://access.redhat.com/errata/RHSA-2023:7177
- https://access.redhat.com/errata/RHSA-2024:1406
- https://access.redhat.com/errata/RHSA-2024:2720
Frequently Asked Questions
What is CVE-2022-3094?
CVE-2022-3094 is a vulnerability in Bind where sending a flood of dynamic DNS updates may cause named to allocate large amounts of memory, leading to a lack of free memory and causing named to exit.
How severe is CVE-2022-3094?
CVE-2022-3094 has a severity rating of 7 (high).
Which software versions are affected by CVE-2022-3094?
The following versions of Bind are affected: 9.16.37, 9.18.11, 9.19.9, 32:9.16.23-0.14.el8, and 32:9.16.23-11.el9.
Are there any known cases of exploitation for CVE-2022-3094?
There are no known cases of exploitation for CVE-2022-3094 at this time.
How can I mitigate CVE-2022-3094?
Users can mitigate CVE-2022-3094 by updating to the remedied versions: 9.16.37, 9.18.11, 9.19.9, 32:9.16.23-0.14.el8, and 32:9.16.23-11.el9.
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- version/isc bind 9/9.16.13-s1
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- version/isc bind 9/9.16.32-s1
- version/isc bind 9/9.16.36-s1