GHSA-xrr9-rh8p-433v

ghsaUSosv

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

view advisory published 2020-01-27Licence: CC-BY-4.0

### Impact Request smuggling is possible when running behind a proxy that doesn't handle Content-Length and Transfer-Encoding properly or doesn't handle alone \n as a headers separator. ### Patches https://github.com/ktorio/ktor/pull/1547 ### Workarounds None except migrating to a better proxy. ### References https://portswigger.net/web-security/request-smuggling https://tools.ietf.org/html/rfc7230#section-9.5

01

describes (1)

Related CVEs.

IDseverity exploitable
CVE-2020-5207UShigh7.5—
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…
02

references

External citations — patches, advisories, analysis.

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