CVE-2021-42756

2023-02-1618:05:39

CWE-121

fortinet

www.cve.org

cve-2021-42756

fortiweb

buffer overflow

cwe-121

remote attacker

arbitrary code execution

http requests

9.8 High

CVSS3

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/E:P/RL:U/RC:C

10 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

52.7%

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.

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"
      }
    ]
  }
]