Vulnerability · Published Jul 26, 2024 · Assigned by apache
CVE-2024-35161Apache Traffic Server: Incomplete check for chunked trailer section allows request smuggling
Critical 9.1
In plain English
A critical-severity security flaw in Apache Traffic Server from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | trafficserver | 9.2.5+ds-0+deb12u1 | DEBIAN-CVE-2024-35161 |
| Debian:12 | trafficserver | 9.2.5+ds-0+deb12u1 | DSA-5758-1 |
| Ubuntu:24.04:LTS | trafficserver | no fix listed | UBUNTU-CVE-2024-35161 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Traffic Server | 8.0.0 – through 8.1.109.0.0 – through 9.2.4 |
Weakness: CWE-444 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N