CVE-2020-5207CWE-444

Request smuggling is possible in Ktor when both chunked TE and content length specified

Medium · published January 27, 2020

CVSS v3.1
5.4
EPSS
1%
Percentile
54.9
In the wild
Unconfirmed
What it is

In Ktor before 1.3.0, request smuggling is possible when running behind a proxy that doesn't handle Content-Length and Transfer-Encoding properly or doesn't handle \n as a headers separator.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00762 · 54.9th percentile
Weakness
CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Published
2020-01-27T19:30Z
EPSS history
Timeline
  • 27 JAN 19:30Z
    Request smuggling is possible in Ktor when both chunked TE and content length specified
    cvelistv5