CVE-2021-31406 Timing side channel vulnerability in endpoint request handler in Vaadin 15-19

2021-03-1900:00:00

CWE-208

Vaadin

www.cve.org

4 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

4.6 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

12.6%

JSON

Non-constant-time comparison of CSRF tokens in endpoint request handler in com.vaadin:flow-server versions 3.0.0 through 5.0.3 (Vaadin 15.0.0 through 18.0.6), and com.vaadin:fusion-endpoint version 6.0.0 (Vaadin 19.0.0) allows attacker to guess a security token for Fusion endpoints via timing attack.

CNA Affected

[
  {
    "product": "Vaadin",
    "vendor": "Vaadin",
    "versions": [
      {
        "status": "affected",
        "version": "19.0.0"
      },
      {
        "lessThan": "*",
        "status": "affected",
        "version": "15.0.0",
        "versionType": "custom"
      }
    ]
  },
  {
    "product": "flow-server",
    "vendor": "Vaadin",
    "versions": [
      {
        "status": "affected",
        "version": "6.0.0"
      },
      {
        "lessThan": "*",
        "status": "affected",
        "version": "3.0.0",
        "versionType": "custom"
      }
    ]
  }
]