CVE-2022-21221 Directory Traversal

2022-03-1711:21:09

snyk

www.cve.org

package vulnerability

improper sanitization

exploitation

windows users

servefile function

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

EPSS

0.002

Percentile

61.6%

JSON

The package github.com/valyala/fasthttp before 1.34.0 are vulnerable to Directory Traversal via the ServeFile function, due to improper sanitization. It is possible to be exploited by using a backslash %5c character in the path. Note: This security issue impacts Windows users only.

CNA Affected

[
  {
    "product": "github.com/valyala/fasthttp",
    "vendor": "n/a",
    "versions": [
      {
        "lessThan": "1.34.0",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]