synced 4 MIN AGO
01 Record

CVE-2022-2795

Processing large delegations may severely degrade resolver performance

MediumPUBLISHEDCNA: isc
CNA base score5.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
View raw JSON

02 Description

Processing large delegations may severely degrade resolver performance

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
2.29% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 83.0% of scored records. A rank, not a probability.
NVD base score
5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD analysis status
Modified. NVD last modified this record on 2026-09-01.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2022-09-21 10:15Z4 YR AGO
Last updated
2024-11-29 12:04Z1 YR AGO
Reserved
2022-08-12
Assigning CNA
isc
Record state
PUBLISHED
Severity
Medium (CVSS 5.3)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
  • CWE-770Allocation of Resources Without Limits or ThrottlingBase
Data version
5.1
Document digest
886355154e86d973798569b3041c550a6ef82945017d3a4ddeffe74e37adc0f0

05 Affected products

VendorProductVersionsPlatforms
ISCBIND9Open Source Branches 9.0 through 9.16 9.0.0 through versions before 9.16.33, Open Source Branch 9.18 9.18.0 through versions before 9.18.7, Supported Preview Branches 9.9-S through 9.11-S 9.9.3-S1 through versions up to and including 9.11.37-S1, Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.33-S1, Development Branch 9.19 9.19.0 through versions before 9.19.5—
iscbind9.0.0 to 9.16.32, 9.9.3 to < 9.11.37, 9.16.8 to < 9.16.32, 9.19.0 to < 9.19.4—

06 References

07 Remediation

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.

08 Fixed in

AlmaLinux 8

  • bind
    Fixed in 32:9.11.36-8.el8
  • bind-chroot
    Fixed in 32:9.11.36-8.el8
  • bind-devel
    Fixed in 32:9.11.36-8.el8
  • bind-export-devel
    Fixed in 32:9.11.36-8.el8
  • bind-export-libs
    Fixed in 32:9.11.36-8.el8
  • bind-libs
    Fixed in 32:9.11.36-8.el8
  • bind-libs-lite
    Fixed in 32:9.11.36-8.el8
  • bind-license
    Fixed in 32:9.11.36-8.el8
  • bind-lite-devel
    Fixed in 32:9.11.36-8.el8
  • bind-pkcs11
    Fixed in 32:9.11.36-8.el8
  • bind-pkcs11-devel
    Fixed in 32:9.11.36-8.el8
  • bind-pkcs11-libs
    Fixed in 32:9.11.36-8.el8
  • bind-pkcs11-utils
    Fixed in 32:9.11.36-8.el8
  • bind-sdb
    Fixed in 32:9.11.36-8.el8
  • bind-sdb-chroot
    Fixed in 32:9.11.36-8.el8
  • bind-utils
    Fixed in 32:9.11.36-8.el8
  • bind9.16
    Fixed in 32:9.16.23-0.14.el8
  • bind9.16-chroot
    Fixed in 32:9.16.23-0.14.el8
  • bind9.16-devel
    Fixed in 32:9.16.23-0.14.el8
  • bind9.16-dnssec-utils
    Fixed in 32:9.16.23-0.14.el8
  • bind9.16-doc
    Fixed in 32:9.16.23-0.14.el8
  • bind9.16-libs
    Fixed in 32:9.16.23-0.14.el8
  • bind9.16-license
    Fixed in 32:9.16.23-0.14.el8
  • bind9.16-utils
    Fixed in 32:9.16.23-0.14.el8
  • python3-bind
    Fixed in 32:9.11.36-8.el8
  • python3-bind9.16
    Fixed in 32:9.16.23-0.14.el8

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 9

  • bind
    Fixed in 32:9.16.23-11.el9
  • bind-chroot
    Fixed in 32:9.16.23-11.el9
  • bind-devel
    Fixed in 32:9.16.23-11.el9
  • bind-dnssec-doc
    Fixed in 32:9.16.23-11.el9
  • bind-dnssec-utils
    Fixed in 32:9.16.23-11.el9
  • bind-doc
    Fixed in 32:9.16.23-11.el9
  • bind-libs
    Fixed in 32:9.16.23-11.el9
  • bind-license
    Fixed in 32:9.16.23-11.el9
  • bind-utils
    Fixed in 32:9.16.23-11.el9
  • python3-bind
    Fixed in 32:9.16.23-11.el9

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Arch Linux

  • bind
    Fixed in 9.18.7-1

Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.

CloudLinux 8

  • bind
    Fixed in 32:9.11.36-8.el8
  • bind-chroot
    Fixed in 32:9.11.36-8.el8
  • bind-devel
    Fixed in 32:9.11.36-8.el8
  • bind-export-devel
    Fixed in 32:9.11.36-8.el8
  • bind-export-libs
    Fixed in 32:9.11.36-8.el8
  • bind-libs
    Fixed in 32:9.11.36-8.el8
  • bind-libs-lite
    Fixed in 32:9.11.36-8.el8
  • bind-license
    Fixed in 32:9.11.36-8.el8
  • bind-lite-devel
    Fixed in 32:9.11.36-8.el8
  • bind-pkcs11
    Fixed in 32:9.11.36-8.el8
  • bind-pkcs11-devel
    Fixed in 32:9.11.36-8.el8
  • bind-pkcs11-libs
    Fixed in 32:9.11.36-8.el8
  • bind-pkcs11-utils
    Fixed in 32:9.11.36-8.el8
  • bind-sdb
    Fixed in 32:9.11.36-8.el8
  • bind-sdb-chroot
    Fixed in 32:9.11.36-8.el8
  • bind-utils
    Fixed in 32:9.11.36-8.el8
  • bind9.16
    Fixed in 32:9.16.23-0.14.el8
  • bind9.16-chroot
    Fixed in 32:9.16.23-0.14.el8
  • bind9.16-devel
    Fixed in 32:9.16.23-0.14.el8
  • bind9.16-dnssec-utils
    Fixed in 32:9.16.23-0.14.el8
  • bind9.16-doc
    Fixed in 32:9.16.23-0.14.el8
  • bind9.16-libs
    Fixed in 32:9.16.23-0.14.el8
  • bind9.16-license
    Fixed in 32:9.16.23-0.14.el8
  • bind9.16-utils
    Fixed in 32:9.16.23-0.14.el8
  • python3-bind
    Fixed in 32:9.11.36-8.el8
  • python3-bind9.16
    Fixed in 32:9.16.23-0.14.el8

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • bind
    Fixed in 32:9.16.23-11.el9
  • bind-chroot
    Fixed in 32:9.16.23-11.el9
  • bind-devel
    Fixed in 32:9.16.23-11.el9
  • bind-dnssec-doc
    Fixed in 32:9.16.23-11.el9
  • bind-dnssec-utils
    Fixed in 32:9.16.23-11.el9
  • bind-doc
    Fixed in 32:9.16.23-11.el9
  • bind-libs
    Fixed in 32:9.16.23-11.el9
  • bind-license
    Fixed in 32:9.16.23-11.el9
  • bind-utils
    Fixed in 32:9.16.23-11.el9
  • python3-bind
    Fixed in 32:9.16.23-11.el9

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • bind9
    Fixed in 1:9.18.7-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • bind9
    Fixed in 1:9.18.7-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • bind9
    Fixed in 1:9.18.7-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • bind9
    Fixed in 1:9.11.3+dfsg-1ubuntu1.18

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • bind9
    Fixed in 1:9.16.1-0ubuntu2.11
  • bind9-libs
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • bind9
    Fixed in 1:9.18.1-1ubuntu1.2
  • bind9-libs
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • isc-dhcp
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 25.10

  • isc-dhcp
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.04 LTS

  • isc-dhcp
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • bind9
    Fixed in 1:9.9.5.dfsg-3ubuntu0.19+esm7
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • bind9
    Fixed in 1:9.10.3.dfsg.P4-8ubuntu1.19+esm3
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.