CVE-2021-31404 Timing side channel vulnerability in UIDL request handler in Vaadin 10, 11-14, and 15-18

2021-02-1700:00:00

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

4.5 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

12.6%

JSON

Non-constant-time comparison of CSRF tokens in UIDL request handler in com.vaadin:flow-server versions 1.0.0 through 1.0.13 (Vaadin 10.0.0 through 10.0.16), 1.1.0 prior to 2.0.0 (Vaadin 11 prior to 14), 2.0.0 through 2.4.6 (Vaadin 14.0.0 through 14.4.6), 3.0.0 prior to 5.0.0 (Vaadin 15 prior to 18), and 5.0.0 through 5.0.2 (Vaadin 18.0.0 through 18.0.5) allows attacker to guess a security token via timing attack.

CNA Affected

[
  {
    "product": "Vaadin",
    "vendor": "Vaadin",
    "versions": [
      {
        "changes": [
          {
            "at": "11.0.0",
            "status": "affected"
          },
          {
            "at": "14.0.0",
            "status": "unaffected"
          },
          {
            "at": "14.0.0",
            "status": "affected"
          },
          {
            "at": "15.0.0",
            "status": "affected"
          },
          {
            "at": "18.0.0",
            "status": "unaffected"
          },
          {
            "at": "18.0.0",
            "status": "affected"
          }
        ],
        "lessThan": "*",
        "status": "affected",
        "version": "10.0.0",
        "versionType": "custom"
      }
    ]
  },
  {
    "product": "flow-server",
    "vendor": "Vaadin",
    "versions": [
      {
        "changes": [
          {
            "at": "1.1.0",
            "status": "affected"
          },
          {
            "at": "2.0.0",
            "status": "unaffected"
          },
          {
            "at": "2.0.0",
            "status": "affected"
          },
          {
            "at": "3.0.0",
            "status": "affected"
          },
          {
            "at": "5.0.0",
            "status": "unaffected"
          },
          {
            "at": "5.0.0",
            "status": "affected"
          }
        ],
        "lessThan": "*",
        "status": "affected",
        "version": "1.0.0",
        "versionType": "custom"
      }
    ]
  }
]