// For flags

CVE-2022-2795

Processing large delegations may severely degrade resolver performance

Severity Score

5.3
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

By 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.

Al inundar el resolvedor de destino con consultas que explotan este fallo, un atacante puede perjudicar significativamente el rendimiento del resolvedor, negando efectivamente a los clientes legítimos el acceso al servicio de resolución DNS

A flaw was found in bind. When flooding the target resolver with special queries, an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service.

*Credits: 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.
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2022-08-12 CVE Reserved
  • 2022-09-21 CVE Published
  • 2024-04-13 EPSS Updated
  • 2024-09-17 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-400: Uncontrolled Resource Consumption
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
>= 9.0.0 < 9.16.33
Search vendor "Isc" for product "Bind" and version " >= 9.0.0 < 9.16.33"
-
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
>= 9.18.0 < 9.18.7
Search vendor "Isc" for product "Bind" and version " >= 9.18.0 < 9.18.7"
-
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
>= 9.19.0 < 9.19.5
Search vendor "Isc" for product "Bind" and version " >= 9.19.0 < 9.19.5"
-
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.9.3
Search vendor "Isc" for product "Bind" and version "9.9.3"
s1, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.9.3
Search vendor "Isc" for product "Bind" and version "9.9.3"
s1, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.9.12
Search vendor "Isc" for product "Bind" and version "9.9.12"
s1, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.9.13
Search vendor "Isc" for product "Bind" and version "9.9.13"
s1, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.10.5
Search vendor "Isc" for product "Bind" and version "9.10.5"
s1, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.10.7
Search vendor "Isc" for product "Bind" and version "9.10.7"
s1, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.11.3
Search vendor "Isc" for product "Bind" and version "9.11.3"
s1, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.11.5
Search vendor "Isc" for product "Bind" and version "9.11.5"
s3, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.11.5
Search vendor "Isc" for product "Bind" and version "9.11.5"
s3, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.11.5
Search vendor "Isc" for product "Bind" and version "9.11.5"
s5, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.11.5
Search vendor "Isc" for product "Bind" and version "9.11.5"
s6, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.11.6
Search vendor "Isc" for product "Bind" and version "9.11.6"
s1, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.11.7
Search vendor "Isc" for product "Bind" and version "9.11.7"
s1, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.11.8
Search vendor "Isc" for product "Bind" and version "9.11.8"
s1, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.11.12
Search vendor "Isc" for product "Bind" and version "9.11.12"
s1, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.11.14-s1
Search vendor "Isc" for product "Bind" and version "9.11.14-s1"
preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.11.19-s1
Search vendor "Isc" for product "Bind" and version "9.11.19-s1"
preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.11.21
Search vendor "Isc" for product "Bind" and version "9.11.21"
s1, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.11.27
Search vendor "Isc" for product "Bind" and version "9.11.27"
s1, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.11.29
Search vendor "Isc" for product "Bind" and version "9.11.29"
s1, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.11.35
Search vendor "Isc" for product "Bind" and version "9.11.35"
s1, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.11.37
Search vendor "Isc" for product "Bind" and version "9.11.37"
s1, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.16.8
Search vendor "Isc" for product "Bind" and version "9.16.8"
s1, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.16.11
Search vendor "Isc" for product "Bind" and version "9.16.11"
s1, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.16.13
Search vendor "Isc" for product "Bind" and version "9.16.13"
s1, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.16.21
Search vendor "Isc" for product "Bind" and version "9.16.21"
s1, supported_preview
Affected
Isc
Search vendor "Isc"
Bind
Search vendor "Isc" for product "Bind"
9.16.32
Search vendor "Isc" for product "Bind" and version "9.16.32"
s1, supported_preview
Affected
Debian
Search vendor "Debian"
Debian Linux
Search vendor "Debian" for product "Debian Linux"
10.0
Search vendor "Debian" for product "Debian Linux" and version "10.0"
-
Affected
Debian
Search vendor "Debian"
Debian Linux
Search vendor "Debian" for product "Debian Linux"
11.0
Search vendor "Debian" for product "Debian Linux" and version "11.0"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
Fedora
Search vendor "Fedoraproject" for product "Fedora"
35
Search vendor "Fedoraproject" for product "Fedora" and version "35"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
Fedora
Search vendor "Fedoraproject" for product "Fedora"
36
Search vendor "Fedoraproject" for product "Fedora" and version "36"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
Fedora
Search vendor "Fedoraproject" for product "Fedora"
37
Search vendor "Fedoraproject" for product "Fedora" and version "37"
-
Affected