CVE-2021-23424 Regular Expression Denial of Service (ReDoS)

2021-08-1800:00:00

snyk

www.cve.org

cve-2021-23424

regular expression denial of service

ansi-html

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

7.8

Confidence

High

EPSS

0.002

Percentile

59.8%

JSON

This affects all versions of package ansi-html. If an attacker provides a malicious string, it will get stuck processing the input for an extremely long time.

CNA Affected

[
  {
    "product": "ansi-html",
    "vendor": "n/a",
    "versions": [
      {
        "lessThan": "unspecified",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      }
    ]
  }
]