CVE-2021-23435 Open Redirect

2021-09-1220:05:10

snyk

www.cve.org

vulnerability

clearance package

open redirect

external domain

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

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).

CNA Affected

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