// For flags

CVE-2021-32566

Specific sequence of HTTP/2 frames can cause ATS to crash

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

Improper Input Validation vulnerability in HTTP/2 of Apache Traffic Server allows an attacker to DOS the server. This issue affects Apache Traffic Server 7.0.0 to 7.1.12, 8.0.0 to 8.1.1, 9.0.0 to 9.0.1.

Una vulnerabilidad de comprobaciĆ³n inapropiada de entrada en HTTP/2 de Apache Traffic Server, permite a un atacante realizar un DOS en el servidor. Este problema afecta a Apache Traffic Server versiones 7.0.0 hasta 7.1.12, versiones 8.0.0 hasta 8.1.1, versiones 9.0.0 hasta 9.0.1

*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
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-05-11 CVE Reserved
  • 2021-06-30 CVE Published
  • 2024-05-22 EPSS Updated
  • 2024-08-03 CVE 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
Apache
Search vendor "Apache"
Traffic Server
Search vendor "Apache" for product "Traffic Server"
>= 7.0.0 <= 7.1.12
Search vendor "Apache" for product "Traffic Server" and version " >= 7.0.0 <= 7.1.12"
-
Affected
Apache
Search vendor "Apache"
Traffic Server
Search vendor "Apache" for product "Traffic Server"
>= 8.0.0 <= 8.1.1
Search vendor "Apache" for product "Traffic Server" and version " >= 8.0.0 <= 8.1.1"
-
Affected
Apache
Search vendor "Apache"
Traffic Server
Search vendor "Apache" for product "Traffic Server"
>= 9.0.0 <= 9.0.1
Search vendor "Apache" for product "Traffic Server" and version " >= 9.0.0 <= 9.0.1"
-
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