GitHub_MCVELIST:CVE-2021-41084CVE-2021-41084 Response Splitting from unsanitized headers in http4s
8.7 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
8.8 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
52.2%
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.nameå), 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.
CNA Affected
[
{
"product": "http4s",
"vendor": "http4s",
"versions": [
{
"status": "affected",
"version": "<= 0.21.28"
},
{
"status": "affected",
"version": ">= 0.22.0, < 0.22.5"
},
{
"status": "affected",
"version": ">= 0.23.0, < 0.23.4"
},
{
"status": "affected",
"version": ">= 1.0.0-M1, < 1.0.0-M27"
}
]
}
]Related
8.7 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
8.8 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
52.2%