CVE-2021-33641

2023-01-2021:15:10

CWE-416

[email protected]

web.nvd.nist.gov

cve-2021-33641

information security

use after free

malloc

nvd

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.4 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

22.9%

JSON

When processing files, malloc stores the data of the current line. When processing comments, malloc incorrectly accesses the released memory (use after free).

Affected configurations

NVD

Node

openeulerbyaccRange<1.9.20200330

openeulerbyaccRange2.0–2.0.20210808

CPENameOperatorVersion
openeuler:byaccopeneuler byacclt1.9.20200330
openeuler:byaccopeneuler byacclt2.0.20210808

CPE	Name	Operator	Version
openeuler:byacc	openeuler byacc	lt	1.9.20200330
openeuler:byacc	openeuler byacc	lt	2.0.20210808

CNA Affected

[
  {
    "vendor": "n/a",
    "product": "byacc",
    "versions": [
      {
        "version": "<1.9.20200330 and <2.0.20210808",
        "status": "affected"
      }
    ]
  }
]