CVE-2023-38522CWE-444

Apache Traffic Server: Incomplete field name check allows request smuggling

High · published July 26, 2024

CVSS v3.1
7.5
EPSS
1%
Percentile
62.1
In the wild
Unconfirmed
What it is

Apache Traffic Server accepts characters that are not allowed for HTTP field names and forwards malformed requests 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 are recommended to upgrade to version 8.1.11 or 9.2.5, which fixes the issue.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00987 · 62.1th percentile
Weakness
CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Published
2024-07-26T09:11Z
EPSS history
Timeline
  • 26 JUL 09:11Z
    Apache Traffic Server: Incomplete field name check allows request smuggling
    cvelistv5