CVE-2021-23386 Remote Memory Exposure

2021-05-2000:00:00

snyk

www.cve.org

7.7 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

LOW

Availability Impact

LOW

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

7.9 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

40.7%

JSON

This affects the package dns-packet before 5.2.2. It creates buffers with allocUnsafe and does not always fill them before forming network packets. This can expose internal application memory over unencrypted network when querying crafted invalid domain names.

CNA Affected

[
  {
    "product": "dns-packet",
    "vendor": "n/a",
    "versions": [
      {
        "lessThan": "5.2.2",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]