Processing large delegations may severely degrade resolver performance

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2022-2795
StatePUBLISHED
Assignerisc
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-09-21 11:15:09 UTC
Updated2026-09-01 19:44:42 UTC
DescriptionBy flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Problem Types: NVD-CWE-noinfo | In BIND 9.0.0 -> 9.16.32, 9.18.0 -> 9.18.6, versions 9.9.3-S1 -> 9.11.37-S1, 9.16.8-S1 -> 9.16.32-S1 of the BIND Supported Preview Edition, and versions 9.19.0 -> 9.19.4 of the BIND 9.19 development branch, a flaw in resolver code can cause named to spend excessive amounts of time on processing large delegations.

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
3.1[email protected]Secondary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
3.1CNADECLARED5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Isc Bind All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA ISC BIND9 affected Open Source Branches 9.0 through 9.16 9.0.0 through versions before 9.16.33 Not specified
CNA ISC BIND9 affected Open Source Branch 9.18 9.18.0 through versions before 9.18.7 Not specified
CNA ISC BIND9 affected Supported Preview Branches 9.9-S through 9.11-S 9.9.3-S1 through versions up to and including 9.11.37-S1 Not specified
CNA ISC BIND9 affected Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.33-S1 Not specified
CNA ISC BIND9 affected Development Branch 9.19 9.19.0 through versions before 9.19.5 Not specified
ADP Isc Bind affected 9.0.0 9.16.32 custom Not specified
ADP Isc Bind affected 9.9.3 9.11.37 custom Not specified
ADP Isc Bind affected 9.16.8 9.16.32 custom Not specified
ADP Isc Bind affected 9.19.0 9.19.4 custom Not specified

References

ReferenceSourceLinkTags
security.netapp.com/advisory/ntap-20241129-0002 af854a3a-2127-422b-91ae-364da2661108 security.netapp.com
[SECURITY] Fedora 36 Update: bind-9.16.33-1.fc36 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
Debian -- Security Information -- DSA-5235-1 bind9 af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
[SECURITY] Fedora 35 Update: bind-dyndb-ldap-11.9-16.fc35 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
ISC BIND: Multiple Vulnerabilities (GLSA 202210-25) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
[SECURITY] [DLA 3138-1] bind9 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
CVE-2022-2795: Processing large delegations may severely degrade resolver performance - Security Advisories af854a3a-2127-422b-91ae-364da2661108 kb.isc.org Patch, Vendor Advisory
oss-security - ISC has disclosed six vulnerabilities in BIND (CVE-2022-2795, CVE-2022-2881, CVE-2022-2906, CVE-2022-3080, CVE-2022-38177, CVE-2022-38178) af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Patch, Third Party Advisory
[SECURITY] Fedora 37 Update: bind-9.18.7-1.fc37 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
FEDORA:FEDORA-2022-8268735e06 MITRE lists.fedoraproject.org
[SECURITY] Fedora 35 Update: bind-dyndb-ldap-11.9-16.fc35 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
[SECURITY] Fedora 37 Update: bind-9.18.7-1.fc37 - package-announce - Fedora Mailing-Lists MITRE 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

CNA: ISC would like to thank Yehuda Afek from Tel-Aviv University and Anat Bremler-Barr & Shani Stajnrod from Reichman University for bringing this vulnerability to our attention. (en)

Additional Advisory Data

Solutions

CNA: Upgrade to the patched release most closely related to your current version of BIND: BIND 9.16.33, BIND 9.18.7, BIND 9.19.5, or for BIND Supported Preview Edition (a special feature preview branch of BIND provided to eligible ISC support customers): BIND 9.16.33-S1.

Workarounds

CNA: No workarounds known.

Exploits

CNA: We are not aware of any active exploits.

Legacy QID Mappings

  • 15140 ISC BIND Denial of Service (DoS) Vulnerability
  • 160426 Oracle Enterprise Linux Security Update for bind (ELSA-2023-0402)
  • 160610 Oracle Enterprise Linux Security Update for bind (ELSA-2023-2261)
  • 160671 Oracle Enterprise Linux Security Update for bind9.16 (ELSA-2023-2792)
  • 160694 Oracle Enterprise Linux Security Update for bind (ELSA-2023-3002)
  • 181072 Debian Security Update for bind9 (DSA 5235-1)
  • 181112 Debian Security Update for bind9 (DLA 3138-1)
  • 182025 Debian Security Update for bind9 (CVE-2022-2795)
  • 198945 Ubuntu Security Notification for Bind Vulnerabilities (USN-5626-1)
  • 241122 Red Hat Update for bind (RHSA-2023:0402)
  • 241422 Red Hat Update for bind (RHSA-2023:2261)
  • 241498 Red Hat Update for bind (RHSA-2023:3002)
  • 241500 Red Hat Update for bind9.16 (RHSA-2023:2792)
  • 257214 CentOS Security Update for bind (CESA-2023:0402)
  • 283150 Fedora Security Update for bind (FEDORA-2022-8268735e06)
  • 283158 Fedora Security Update for bind (FEDORA-2022-b197d64471)
  • 296084 Oracle Solaris 11.4 Support Repository Update (SRU) 50.126.3 Missing (CPUOCT2022)
  • 330122 IBM AIX Denial of Service (DoS) ISC BIND Vulnerability (bind_advisory22)
  • 354835 Amazon Linux Security Advisory for bind : ALAS2-2023-2001
  • 355145 Amazon Linux Security Advisory for bind : ALAS2023-2023-161
  • 377799 F5 BIG-IP Bind Vulnerability cve-2022-2795 (K11742512)
  • 377944 Alibaba Cloud Linux Security Update for bind (ALINUX2-SA-2023:0006)
  • 502507 Alpine Linux Security Update for bind
  • 502711 Alpine Linux Security Update for bind
  • 672407 EulerOS Security Update for bind (EulerOS-SA-2022-2788)
  • 672439 EulerOS Security Update for bind (EulerOS-SA-2022-2838)
  • 672456 EulerOS Security Update for bind (EulerOS-SA-2022-2813)
  • 672477 EulerOS Security Update for dhcp (EulerOS-SA-2023-1032)
  • 672503 EulerOS Security Update for bind (EulerOS-SA-2023-1002)
  • 672510 EulerOS Security Update for dhcp (EulerOS-SA-2023-1007)
  • 672524 EulerOS Security Update for bind (EulerOS-SA-2023-1027)
  • 672534 EulerOS Security Update for bind (EulerOS-SA-2023-1117)
  • 672543 EulerOS Security Update for bind (EulerOS-SA-2023-1093)
  • 672629 EulerOS Security Update for dhcp (EulerOS-SA-2023-1353)
  • 672652 EulerOS Security Update for dhcp (EulerOS-SA-2023-1381)
  • 672781 EulerOS Security Update for bind (EulerOS-SA-2023-1489)
  • 673277 EulerOS Security Update for dhcp (EulerOS-SA-2023-2580)
  • 673317 EulerOS Security Update for dhcp (EulerOS-SA-2023-2610)
  • 710661 Gentoo Linux ISC BIND Multiple Vulnerabilities (GLSA 202210-25)
  • 752651 SUSE Enterprise Linux Security Update for bind (SUSE-SU-2022:3499-1)
  • 752699 SUSE Enterprise Linux Security Update for bind (SUSE-SU-2022:3682-1)
  • 752717 SUSE Enterprise Linux Security Update for bind (SUSE-SU-2022:3729-1)
  • 752737 SUSE Enterprise Linux Recommended update for bind (SUSE-SU-2022:3767-1)
  • 904036 Common Base Linux Mariner (CBL-Mariner) Security Update for bind (11008)
  • 904043 Common Base Linux Mariner (CBL-Mariner) Security Update for bind (10999)
  • 904526 Common Base Linux Mariner (CBL-Mariner) Security Update for bind (11008-1)
  • 904630 Common Base Linux Mariner (CBL-Mariner) Security Update for bind (10999-1)
  • 941004 AlmaLinux Security Update for bind (ALSA-2023:2261)
  • 941073 AlmaLinux Security Update for bind9.16 (ALSA-2023:2792)
  • 941094 AlmaLinux Security Update for bind (ALSA-2023:3002)

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report