CVE-2020-5207 — HTTP Request Smuggling in Ktor

CWE-444 — HTTP Request Smuggling4 documents4 sources
Severity
7.5HIGHNVD
CNA5.4
EPSS
0.0%
top 99.84%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Ktor.io KtorJetbrains Ktor
Timeline
PublishedJan 27

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NExploitability: 3.9 | Impact: 3.6

Affected Packages2 packages

▶CVEListV5ktor.io/ktor< 1.3.0
▶NVDjetbrains/ktor< 1.3.0

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

3
CVEList
Request smuggling is possible in Ktor when both chunked TE and content length specified↗2020-01-27
▶
GHSA
Request smuggling is possible when both chunked TE and content length specified↗2020-01-27
▶
OSV
Request smuggling is possible when both chunked TE and content length specified↗2020-01-27
▶
CVE-2020-5207 — HTTP Request Smuggling in Ktor.io Ktor | cvebase