CVE-2020-5207 - Vulnerability Details - OpenCVE

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.

Published: 2020-01-27

Score: 5.4 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Ktor.io

Ktor

affected

Version	Status	Constraints
`< 1.3.0`	affected	—

Configuration 1 [-]

cpe:2.3:a:jetbrains:ktor:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
Github GHSA	GHSA-xrr9-rh8p-433v	Request smuggling is possible when both chunked TE and content length specified

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

The EPSS score is 0.00762.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/ktorio/ktor/pull/1547
https://github.com/ktorio/ktor/security/advisories/GHSA-xrr9-rh8p-433v

History

No history.

Subscriptions

Jetbrains Ktor

MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2020-01-27T19:30:15.000Z

Updated: 2024-08-04T08:22:09.258Z

Reserved: 2020-01-02T00:00:00.000Z

Link: CVE-2020-5207

Vulnrichment

No data.

NVD

Status : Modified

Published: 2020-01-27T20:15:10.980

Modified: 2026-06-17T03:21:01.517

Link: CVE-2020-5207

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-444
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

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