Apache Traffic Server does not reject Transfer-Encoding in HTTP/2 requests, allowing downgrade request smuggling.
This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.
Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 3
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Apache Traffic_Server
cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*
|
8.0.0
|
<= 8.1.9
|
|
Apache Traffic_Server
cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*
|
9.0.0
|
9.2.15
|
|
Apache Traffic_Server
cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*
|
10.0.0
|
10.1.4
|