CVE-2022-36021 Redis string pattern matching can be abused to achieve Denial of Service

2023-03-0115:46:23

CWE-407

GitHub_M

www.cve.org

cve-2022-36021; redis; pattern matching; denial of service; fix; versions 6.0.18

6.2.11

7.0.9

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

6.3 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.0%

JSON

Redis is an in-memory database that persists on disk. Authenticated users can use string matching commands (like SCAN or KEYS) with a specially crafted pattern to trigger a denial-of-service attack on Redis, causing it to hang and consume 100% CPU time. The problem is fixed in Redis versions 6.0.18, 6.2.11, 7.0.9.

CNA Affected

[
  {
    "vendor": "redis",
    "product": "redis",
    "versions": [
      {
        "version": "< 6.0.18",
        "status": "affected"
      },
      {
        "version": ">= 6.2.0, < 6.2.11",
        "status": "affected"
      },
      {
        "version": ">= 7.0.0, < 7.0.9",
        "status": "affected"
      }
    ]
  }
]