Executive Summary

Informations
Name CVE-2021-41084 First vendor Publication 2021-09-21
Vendor Cve Last vendor Modification 2021-10-06

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
Overall CVSS Score 4.7
Base Score 4.7 Environmental Score 4.7
impact SubScore 1.4 Temporal Score 4.7
Exploitabality Sub Score 2.8
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction Required
Scope Changed Confidentiality Impact None
Integrity Impact Low Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:N/I:P/A:N)
Cvss Base Score 4.3 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41084

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-74 Failure to Sanitize Data into a Different Plane ('Injection')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 38

Sources (Detail)

Source Url
CONFIRM https://github.com/http4s/http4s/security/advisories/GHSA-5vcm-3xc3-w7x3
MISC https://github.com/http4s/http4s/commit/d02007db1da4f8f3df2dbf11f1db9ac7afc3f9d8
https://httpwg.org/http-core/draft-ietf-httpbis-semantics-latest.html#fields....
https://owasp.org/www-community/attacks/HTTP_Response_Splitting

Alert History

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Date Informations
2021-10-06 21:23:23
  • Multiple Updates
2021-09-22 17:22:52
  • Multiple Updates
2021-09-22 00:22:50
  • First insertion