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CVE-2021-41084
Good to know:
Date: September 21, 2021
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.
Language: SCALA
Severity Score
Related Resources (6)
Severity Score
Top Fix
Upgrade Version
Upgrade to version org.http4s:http4s-blaze-client_2.12:0.21.29, 0.22.5, 0.23.4, 1.0.0, org.http4s:http4s-blaze-client_2.13:0.21.29, 0.22.5, 0.23.4, 1.0.0, org.http4s:http4s-blaze-client_3:0.22.5, 0.23.4, 1.0.0
CVSS v3.1
| Base Score: |
|
|---|---|
| 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 |
CVSS v2
| Base Score: |
|
|---|---|
| Access Vector (AV): | NETWORK |
| Access Complexity (AC): | MEDIUM |
| Authentication (AU): | NONE |
| Confidentiality (C): | NONE |
| Integrity (I): | PARTIAL |
| Availability (A): | NONE |
| Additional information: |