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SnykCVE-2021-23435

HistorySep 12, 2021 - 8:15 p.m.

CVE-2021-23435

2021-09-1220:15:07

CWE-601

snyk

web.nvd.nist.gov

cve-2021-23435

nvd

information security

vulnerability

package clearance

external domain redirection

CVSS2

5.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:P/A:N

CVSS3

7.6

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

AI Score

6.3

Confidence

High

EPSS

0.001

Percentile

29.3%

JSON

This affects the package clearance before 2.5.0. The vulnerability can be possible when users are able to set the value of session[:return_to]. If the value used for return_to contains multiple leading slashes (/////example.com) the user ends up being redirected to the external domain that comes after the slashes (http://example.com).

Affected configurations

Nvd

Node

thoughtbotclearanceRange<2.5.0

VendorProductVersionCPE
thoughtbotclearance*cpe:2.3:a:thoughtbot:clearance:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
thoughtbot	clearance	*	cpe:2.3:a:thoughtbot:clearance::::::::

CNA Affected

[
  {
    "product": "clearance",
    "vendor": "n/a",
    "versions": [
      {
        "lessThan": "2.5.0",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]