CVE-2023-6551

2024-01-0416:15:09

CWE-20

CWE-434

CERT-PL

web.nvd.nist.gov

security

vulnerability

xss

file upload

content-type

mitigation

whitelisting

nvd

CVSS3

5.4

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

5.2

Confidence

High

EPSS

Percentile

14.0%

JSON

As a simple library, class.upload.php does not perform an in-depth check on uploaded files, allowing a stored XSS vulnerability when the default configuration is used.

Developers must be aware of that fact and use extension whitelisting accompanied by forcing the server to always provide content-type based on the file extension.

The README has been updated to include these guidelines.

Affected configurations

Nvd

Node

verotclass.upload.phpMatch-

VendorProductVersionCPE
verotclass.upload.php-cpe:2.3:a:verot:class.upload.php:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
verot	class.upload.php	-	cpe:2.3:a:verot:class.upload.php:-:::::::*

CNA Affected

[
  {
    "defaultStatus": "affected",
    "product": "class.upload.php",
    "repo": "https://github.com/verot/class.upload.php",
    "vendor": "class.upload.php",
    "versions": [
      {
        "lessThanOrEqual": "*",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      }
    ]
  }
]