CVE-2020-5274 Exceptions displayed in non-debug configurations in Symfony

2020-03-3019:40:14

CWE-209

GitHub_M

www.cve.org

4.6 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

5.2 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

24.2%

JSON

In Symfony before versions 5.0.5 and 4.4.5, some properties of the Exception were not properly escaped when the ErrorHandler rendered it stacktrace. In addition, the stacktrace were displayed even in a non-debug configuration. The ErrorHandler now escape alls properties of the exception, and the stacktrace is only display in debug configuration. This issue is patched in symfony/http-foundation versions 4.4.5 and 5.0.5

CNA Affected

[
  {
    "product": "symfony",
    "vendor": "symfony",
    "versions": [
      {
        "status": "affected",
        "version": ">= 4.0.0, < 4.4.5"
      },
      {
        "status": "affected",
        "version": ">= 5.0.0, < 5.0.5"
      }
    ]
  }
]