CVE-2021-40647

Published Sep 9, 2022

Last updated a year ago

CVSS medium 5.5

Overview

Description: In man2html 1.6g, a specific string being read in from a file will overwrite the size parameter in the top chunk of the heap. This at least causes the program to segmentation abort if the heap size parameter isn't aligned correctly. In version before GLIBC version 2.29 and aligned correctly, it allows arbitrary write anywhere in the programs memory.
Source: cve@mitre.org
NVD status: Analyzed

Risk scores

CVSS 3.1

Type: Primary
Base score: 5.5
Impact score: 3.6
Exploitability score: 1.8
Vector string: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Severity: MEDIUM

Weaknesses

nvd@nist.gov: CWE-787

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:man2html_project:man2html:1.6g:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "843C1C93-461D-413C-B54F-2642C98DD0F7"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

References