// For flags

CVE-2022-3736

named configured to answer from stale cache may terminate unexpectedly while processing RRSIG queries

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

BIND 9 resolver can crash when stale cache and stale answers are enabled, option `stale-answer-client-timeout` is set to a positive integer, and the resolver receives an RRSIG query.
This issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through 9.16.36-S1.

El solucionador BIND 9 puede fallar cuando el caché obsoleto y las respuestas obsoletas están habilitados, la opción `stale-answer-client-timeout` está configurada en un entero positivo y el solucionador recibe una consulta RRSIG. Este problema afecta a las versiones de BIND 9, 9.16.12 a 9.16.36, 9.18.0 a 9.18.10, 9.19.0 a 9.19.8 y 9.16.12-S1 a 9.16.36-S1.

A flaw was found in Bind, where a resolver crash is possible. When stale cache and stale answers are enabled, the option stale-answer-client-timeout is set to a positive integer, and the resolver receives an RRSIG query.

*Credits: ISC would like to thank Borja Marcos from Sarenet (with assistance by Iratxe Niño from Fundación Sarenet) 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
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-10-28 CVE Reserved
  • 2023-01-25 CVE Published
  • 2024-08-03 CVE Updated
  • 2024-08-17 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
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"
 >= 9.16.12 < 9.16.37
Search vendor "Isc" for product "Bind" and version " >= 9.16.12 < 9.16.37"
-
Affected
Isc
Search vendor "Isc"
 Bind
Search vendor "Isc" for product "Bind"
 >= 9.18.0 < 9.18.11
Search vendor "Isc" for product "Bind" and version " >= 9.18.0 < 9.18.11"
-
Affected
Isc
Search vendor "Isc"
 Bind
Search vendor "Isc" for product "Bind"
 >= 9.19.0 < 9.19.9
Search vendor "Isc" for product "Bind" and version " >= 9.19.0 < 9.19.9"
-
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"
 9.16.14
Search vendor "Isc" for product "Bind" and version "9.16.14"
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
Isc
Search vendor "Isc"
 Bind
Search vendor "Isc" for product "Bind"
 9.16.36
Search vendor "Isc" for product "Bind" and version "9.16.36"
s1, supported_preview
Affected