Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2021-41084

Severity CVSS v4.0:
Pending analysis
Type:
CWE-74 Injection
Publication date:
21/09/2021
Last modified:
25/10/2022

Description

http4s is an open source scala interface for HTTP. In affected versions http4s is vulnerable to response-splitting or request-splitting attacks when untrusted user input is used to create any of the following fields: Header names (`Header.name`å), Header values (`Header.value`), Status reason phrases (`Status.reason`), URI paths (`Uri.Path`), URI authority registered names (`URI.RegName`) (through 0.21). This issue has been resolved in versions 0.21.30, 0.22.5, 0.23.4, and 1.0.0-M27 perform the following. As a matter of practice http4s services and client applications should sanitize any user input in the aforementioned fields before returning a request or response to the backend. The carriage return, newline, and null characters are the most threatening.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N CVSS v3.1 Severity and Metrics:

Base Score: 4.70 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Changed
Confidentiality (C): None
Integrity (I): Low
Availability (A): None

Base Score 3.x
4.70
Severity 3.x
MEDIUM
Vector 2.0
AV:N/AC:M/Au:N/C:N/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 4.30 MEDIUM
Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): None
Integrity (I): Physical
Availability (A): None

Base Score 2.0
4.30
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:typelevel:http4s:*:*:*:*:*:*:*:* 0.21.29 (excluding)
cpe:2.3:a:typelevel:http4s:*:*:*:*:*:*:*:* 0.22.0 (including) 0.22.5 (excluding)
cpe:2.3:a:typelevel:http4s:*:*:*:*:*:*:*:* 0.23.0 (including) 0.23.4 (excluding)
cpe:2.3:a:typelevel:http4s:1.0.0:milestone1:*:*:*:*:*:*
cpe:2.3:a:typelevel:http4s:1.0.0:milestone10:*:*:*:*:*:*
cpe:2.3:a:typelevel:http4s:1.0.0:milestone11:*:*:*:*:*:*
cpe:2.3:a:typelevel:http4s:1.0.0:milestone12:*:*:*:*:*:*
cpe:2.3:a:typelevel:http4s:1.0.0:milestone13:*:*:*:*:*:*
cpe:2.3:a:typelevel:http4s:1.0.0:milestone14:*:*:*:*:*:*
cpe:2.3:a:typelevel:http4s:1.0.0:milestone15:*:*:*:*:*:*
cpe:2.3:a:typelevel:http4s:1.0.0:milestone16:*:*:*:*:*:*
cpe:2.3:a:typelevel:http4s:1.0.0:milestone17:*:*:*:*:*:*
cpe:2.3:a:typelevel:http4s:1.0.0:milestone18:*:*:*:*:*:*
cpe:2.3:a:typelevel:http4s:1.0.0:milestone19:*:*:*:*:*:*
cpe:2.3:a:typelevel:http4s:1.0.0:milestone2:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools