CVE-2022-3204
Summary
| CVE | CVE-2022-3204 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2022-09-26 14:15:00 UTC |
| Updated | 2023-11-07 03:50:00 UTC |
| Description | A vulnerability named 'Non-Responsive Delegation Attack' (NRDelegation Attack) has been discovered in various DNS resolving software. The NRDelegation Attack works by having a malicious delegation with a considerable number of non responsive nameservers. The attack starts by querying a resolver for a record that relies on those unresponsive nameservers. The attack can cause a resolver to spend a lot of time/resources resolving records under a malicious delegation point where a considerable number of unresponsive NS records reside. It can trigger high CPU usage in some resolver implementations that continually look in the cache for resolved NS records in that delegation. This can lead to degraded performance and eventually denial of service in orchestrated attacks. Unbound does not suffer from high CPU usage, but resources are still needed for resolving the malicious delegation. Unbound will keep trying to resolve the record until hard limits are reached. Based on the nature of the attack and the replies, different limits could be reached. From version 1.16.3 on, Unbound introduces fixes for better performance when under load, by cutting opportunistic queries for nameserver discovery and DNSKEY prefetching and limiting the number of times a delegation point can issue a cache lookup for missing records. |
Risk And Classification
Problem Types: CWE-400
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Fedoraproject | Fedora | 35 | All | All | All |
| Operating System | Fedoraproject | Fedora | 36 | All | All | All |
| Operating System | Fedoraproject | Fedora | 37 | All | All | All |
| Application | Nlnetlabs | Unbound | All | All | All | All |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| [SECURITY] Fedora 37 Update: unbound-1.16.3-1.fc37 - package-announce - Fedora Mailing-Lists | lists.fedoraproject.org | ||
| www.nlnetlabs.nl/downloads/unbound/CVE-2022-3204.txt | CONFIRM | www.nlnetlabs.nl | |
| Unbound: Multiple Vulnerabilities (GLSA 202212-02) — Gentoo security | GENTOO | security.gentoo.org | |
| [SECURITY] Fedora 36 Update: unbound-1.16.3-1.fc36 - package-announce - Fedora Mailing-Lists | FEDORA | lists.fedoraproject.org | |
| [SECURITY] Fedora 36 Update: unbound-1.16.3-1.fc36 - package-announce - Fedora Mailing-Lists | lists.fedoraproject.org | ||
| [SECURITY] Fedora 35 Update: unbound-1.16.3-1.fc35 - package-announce - Fedora Mailing-Lists | FEDORA | lists.fedoraproject.org | |
| 503 Backend fetch failed | FEDORA | lists.fedoraproject.org | |
| [SECURITY] [DLA 3371-1] unbound security update | MLIST | lists.debian.org | |
| [SECURITY] Fedora 35 Update: unbound-1.16.3-1.fc35 - package-announce - Fedora Mailing-Lists | lists.fedoraproject.org | ||
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
LEGACY: We would like to thank Yehuda Afek from Tel-Aviv University, Anat Bremler-Barr and Shani Stajnrod from Reichman University for discovering and disclosing the vulnerability.
Legacy QID Mappings
- 160613 Oracle Enterprise Linux Security Update for unbound (ELSA-2023-2370)
- 160680 Oracle Enterprise Linux Security Update for unbound (ELSA-2023-2771)
- 181641 Debian Security Update for unbound (DLA 3371-1)
- 183940 Debian Security Update for unbound (CVE-2022-3204)
- 199035 Ubuntu Security Notification for Unbound Vulnerability (USN-5732-1)
- 241446 Red Hat Update for unbound (RHSA-2023:2370)
- 241518 Red Hat Update for unbound (RHSA-2023:2771)
- 283191 Fedora Security Update for unbound (FEDORA-2022-164cf7837e)
- 283196 Fedora Security Update for unbound (FEDORA-2022-204ee3da84)
- 354699 Amazon Linux Security Advisory for unbound : ALAS2022-2023-265
- 355270 Amazon Linux Security Advisory for unbound : ALAS2023-2023-078
- 357097 Amazon Linux Security Advisory for unbound : ALAS2-2024-2451
- 357217 Amazon Linux Security Advisory for unbound : ALAS2-2024-2467
- 379639 Alibaba Cloud Linux Security Update for unbound (ALINUX3-SA-2024:0027)
- 502798 Alpine Linux Security Update for unbound
- 672378 EulerOS Security Update for unbound (EulerOS-SA-2022-2746)
- 672384 EulerOS Security Update for unbound (EulerOS-SA-2022-2781)
- 672419 EulerOS Security Update for unbound (EulerOS-SA-2022-2808)
- 672428 EulerOS Security Update for unbound (EulerOS-SA-2022-2833)
- 672463 EulerOS Security Update for unbound (EulerOS-SA-2022-2859)
- 672483 EulerOS Security Update for unbound (EulerOS-SA-2023-1024)
- 672522 EulerOS Security Update for unbound (EulerOS-SA-2023-1049)
- 672774 EulerOS Security Update for unbound (EulerOS-SA-2023-1517)
- 690948 Free Berkeley Software Distribution (FreeBSD) Security Update for unbound (5a1c2e06-3fb7-11ed-a402-b42e991fc52e)
- 710690 Gentoo Linux Unbound Multiple Vulnerabilities (GLSA 202212-02)
- 904059 Common Base Linux Mariner (CBL-Mariner) Security Update for unbound (11041)
- 904063 Common Base Linux Mariner (CBL-Mariner) Security Update for unbound (11033)
- 904399 Common Base Linux Mariner (CBL-Mariner) Security Update for unbound (11033-1)
- 904750 Common Base Linux Mariner (CBL-Mariner) Security Update for unbound (11041-1)
- 941028 AlmaLinux Security Update for unbound (ALSA-2023:2370)
- 941093 AlmaLinux Security Update for unbound (ALSA-2023:2771)