CVE-2024-35161
Apache Traffic Server: Incomplete check for chunked trailer section allows request smuggling
- State
- Published
- Severity
- 9.1 Critical
- Published
- Jul 26, 2024
- Updated
- Nov 3, 2025
- Reserved
- May 9, 2024
Description
Apache Traffic Server forwards malformed HTTP chunked trailer section to origin servers. This can be utilized for request smuggling and may also lead cache poisoning if the origin servers are vulnerable.
This issue affects Apache Traffic Server: from 8.0.0 through 8.1.10, from 9.0.0 through 9.2.4.
Users can set a new setting (proxy.config.http.drop_chunked_trailers) not to forward chunked trailer section. Users are recommended to upgrade to version 8.1.11 or 9.2.5, which fixes the issue.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.1 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N | CISA-ADP |
Weaknesses
- CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Affected Products
| Product | Versions |
|---|---|
Apache Traffic ServerApache Software Foundation |
|
References
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