// For flags

CVE-2022-2906

Memory leaks in code handling Diffie-Hellman key exchange via TKEY RRs (OpenSSL 3.0.0+ only)

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

An attacker can leverage this flaw to gradually erode available memory to the point where named crashes for lack of resources. Upon restart the attacker would have to begin again, but nevertheless there is the potential to deny service.

Un atacante puede aprovechar este fallo para erosionar gradualmente la memoria disponible hasta el punto de que named sea bloqueado por falta de recursos. Al reiniciar, el atacante tendría que empezar de nuevo, pero sin embargo se presenta la posibilidad de denegar el servicio

Yehuda Afek, Anat Bremler-Barr, and Shani Stajnrod discovered that Bind incorrectly handled large delegations. A remote attacker could possibly use this issue to reduce performance, leading to a denial of service. It was discovered that Bind incorrectly handled statistics requests. A remote attacker could possibly use this issue to obtain sensitive memory contents, or cause a denial of service. This issue only affected Ubuntu 22.04 LTS.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-08-19 CVE Reserved
  • 2022-09-21 CVE Published
  • 2024-09-17 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-401: Missing Release of Memory after Effective Lifetime
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"
 >= 9.18.0 < 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