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[email protected]CVE-2021-21424

HistoryMay 13, 2021 - 4:15 p.m.

CVE-2021-21424

2021-05-1316:15:07

CWE-200

CWE-203

[email protected]

web.nvd.nist.gov

symfony

php

framework

web applications

console applications

security

cve-2021-21424

user enumeration

permissions

patch

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

5.3 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

47.9%

JSON

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. The ability to enumerate users was possible without relevant permissions due to different handling depending on whether the user existed or not when attempting to use the switch users functionality. We now ensure that 403s are returned whether the user exists or not if a user cannot switch to a user or if the user does not exist. The patch for this issue is available for branch 3.4.

Affected configurations

Vulners

NVD

Node

symfonytwigRange2.8.0–3.4.48

symfonytwigRange4.0.0–4.4.23

symfonytwigRange5.0.0–5.2.8

VendorProductVersionCPE
symfonytwig*cpe:2.3:a:symfony:twig:*:*:*:*:*:*:*:*
symfonytwig*cpe:2.3:a:symfony:twig:*:*:*:*:*:*:*:*
symfonytwig*cpe:2.3:a:symfony:twig:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
symfony	twig	*	cpe:2.3:a:symfony:twig::::::::
symfony	twig	*	cpe:2.3:a:symfony:twig::::::::
symfony	twig	*	cpe:2.3:a:symfony:twig::::::::

CNA Affected

[
  {
    "vendor": "symfony",
    "product": "symfony",
    "versions": [
      {
        "version": ">= 2.8.0, < 3.4.48",
        "status": "affected"
      },
      {
        "version": ">= 4.0.0, < 4.4.23",
        "status": "affected"
      },
      {
        "version": ">= 5.0.0, < 5.2.8",
        "status": "affected"
      }
    ]
  }
]