GitHub Advisory DatabaseGHSA-XRR9-RH8P-433VRequest smuggling is possible when both chunked TE and content length specified
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
0.001 Low
EPSS
Percentile
31.0%
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
Affected configurations
| CPE | Name | Operator | Version |
|---|---|---|---|
| io.ktor:ktor-server-cio | lt | 1.3.0 | |
| io.ktor:ktor-client-cio | lt | 1.3.0 |
Related
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
0.001 Low
EPSS
Percentile
31.0%