Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-39185

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
01/09/2021
Last modified:
15/09/2021

Description

Http4s is a minimal, idiomatic Scala interface for HTTP services. In http4s versions 0.21.26 and prior, 0.22.0 through 0.22.2, 0.23.0, 0.23.1, and 1.0.0-M1 through 1.0.0-M24, the default CORS configuration is vulnerable to an origin reflection attack. The middleware is also susceptible to a Null Origin Attack. The problem is fixed in 0.21.27, 0.22.3, 0.23.2, and 1.0.0-M25. The original `CORS` implementation and `CORSConfig` are deprecated. See the GitHub GHSA for more information, including code examples and workarounds.

Impact

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

Base Score: 9.10 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

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

Base Score 3.x
9.10
Severity 3.x
CRITICAL
Vector 2.0
AV:N/AC:L/Au:N/C:P/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 6.40 MEDIUM
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:N

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

Base Score 2.0
6.40
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:typelevel:http4s:*:*:*:*:*:*:*:* 0.21.26 (including)
cpe:2.3:a:typelevel:http4s:*:*:*:*:*:*:*:* 0.22.0 (including) 0.22.2 (including)
cpe:2.3:a:typelevel:http4s:0.23.0:*:*:*:*:*:*:*
cpe:2.3:a:typelevel:http4s:0.23.1:*:*:*:*:*:*:*
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:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools