CVE-2021-42756

2023-02-1619:15:11

CWE-787

CWE-121

fortinet

web.nvd.nist.gov

cve-2021-42756

fortiweb

buffer overflow

cwe-121

remote code execution

nvd

security vulnerability

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

9.9

Confidence

High

EPSS

0.002

Percentile

55.1%

JSON

Multiple stack-based buffer overflow vulnerabilities [CWE-121] in the proxy daemon of FortiWeb 5.x all versions, 6.0.7 and below, 6.1.2 and below, 6.2.6 and below, 6.3.16 and below, 6.4 all versions may allow an unauthenticated remote attacker to achieve arbitrary code execution via specifically crafted HTTP requests.

Affected configurations

Nvd

Node

fortinetfortiwebRange5.6.0–6.0.8

fortinetfortiwebRange6.1.0–6.1.3

fortinetfortiwebRange6.2.0–6.2.7

fortinetfortiwebRange6.3.0–6.3.17

fortinetfortiwebRange6.4.0–6.4.2

VendorProductVersionCPE
fortinetfortiweb*cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
fortinet	fortiweb	*	cpe:2.3:a:fortinet:fortiweb::::::::

CNA Affected

[
  {
    "vendor": "Fortinet",
    "product": "FortiWeb",
    "defaultStatus": "unaffected",
    "versions": [
      {
        "versionType": "semver",
        "version": "6.4.0",
        "lessThanOrEqual": "6.4.1",
        "status": "affected"
      },
      {
        "versionType": "semver",
        "version": "6.3.0",
        "lessThanOrEqual": "6.3.16",
        "status": "affected"
      },
      {
        "versionType": "semver",
        "version": "6.2.0",
        "lessThanOrEqual": "6.2.6",
        "status": "affected"
      },
      {
        "versionType": "semver",
        "version": "6.1.0",
        "lessThanOrEqual": "6.1.2",
        "status": "affected"
      },
      {
        "versionType": "semver",
        "version": "6.0.0",
        "lessThanOrEqual": "6.0.7",
        "status": "affected"
      },
      {
        "versionType": "semver",
        "version": "5.9.0",
        "lessThanOrEqual": "5.9.1",
        "status": "affected"
      },
      {
        "versionType": "semver",
        "version": "5.8.5",
        "lessThanOrEqual": "5.8.7",
        "status": "affected"
      },
      {
        "versionType": "semver",
        "version": "5.8.0",
        "lessThanOrEqual": "5.8.3",
        "status": "affected"
      },
      {
        "versionType": "semver",
        "version": "5.7.0",
        "lessThanOrEqual": "5.7.3",
        "status": "affected"
      },
      {
        "versionType": "semver",
        "version": "5.6.0",
        "lessThanOrEqual": "5.6.2",
        "status": "affected"
      },
      {
        "versionType": "semver",
        "version": "5.8.0",
        "lessThan": "5.8.*",
        "status": "affected"
      },
      {
        "versionType": "semver",
        "version": "5.7.0",
        "lessThan": "5.7.*",
        "status": "affected"
      },
      {
        "versionType": "semver",
        "version": "5.6.0",
        "lessThan": "5.6.*",
        "status": "affected"
      }
    ]
  }
]