CVE-2023-34457 MechanicalSoup vulnerable to malicious web server reading arbitrary files on client using file input inside HTML form

2023-07-0519:25:35

CWE-20

GitHub_M

www.cve.org

mechanicalsoup

html form

vulnerability

cve-2023-34457

python

library

web server

file input

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

25.4%

JSON

MechanicalSoup is a Python library for automating interaction with websites. Starting in version 0.2.0 and prior to version 1.3.0, a malicious web server can read arbitrary files on the client using a <input type="file" ...> inside HTML form. All users of MechanicalSoup’s form submission are affected, unless they took very specific (and manual) steps to reset HTML form field values. Version 1.3.0 contains a patch for this issue.

CNA Affected

[
  {
    "vendor": "MechanicalSoup",
    "product": "MechanicalSoup",
    "versions": [
      {
        "version": ">= 0.2.0, < 1.3.0",
        "status": "affected"
      }
    ]
  }
]