CVE-2020-26941

Published Jan 26, 2021

Last updated 4 years ago

CVSS medium 5.5

Overview

Description: A local (authenticated) low-privileged user can exploit a behavior in an ESET installer to achieve arbitrary file overwrite (deletion) of any file via a symlink, due to insecure permissions. The possibility of exploiting this vulnerability is limited and can only take place during the installation phase of ESET products. Furthermore, exploitation can only succeed when Self-Defense is disabled. Affected products are: ESET NOD32 Antivirus, ESET Internet Security, ESET Smart Security, ESET Smart Security Premium versions 13.2 and lower; ESET Endpoint Antivirus, ESET Endpoint Security, ESET NOD32 Antivirus Business Edition, ESET Smart Security Business Edition versions 7.3 and lower; ESET File Security for Microsoft Windows Server, ESET Mail Security for Microsoft Exchange Server, ESET Mail Security for IBM Domino, ESET Security for Kerio, ESET Security for Microsoft SharePoint Server versions 7.2 and lower.
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:L/UI:N/S:U/C:N/I:H/A:N
Severity: MEDIUM

CVSS 2.0

Type: Primary
Base score: 3.6
Impact score: 4.9
Exploitability score: 3.9
Vector string: AV:L/AC:L/Au:N/C:N/I:P/A:P

Weaknesses

nvd@nist.gov: CWE-276

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:eset:endpoint_antivirus:*:*:*:*:*:-:*:*",
            "vulnerable": true,
            "matchCriteriaId": "8AB7C2EB-F12D-4F5A-86A0-D1C71B10D301",
            "versionEndIncluding": "7.3"
          },
          {
            "criteria": "cpe:2.3:a:eset:endpoint_security:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "52BCDA83-E591-4BBB-B173-3802182B8728",
            "versionEndIncluding": "7.3"
          },
          {
            "criteria": "cpe:2.3:a:eset:file_security:*:*:*:*:*:windows_server:*:*",
            "vulnerable": true,
            "matchCriteriaId": "B726EEB4-03A5-4025-8C8E-66625338A0FD",
            "versionEndIncluding": "7.2"
          },
          {
            "criteria": "cpe:2.3:a:eset:internet_security:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "E2B75F9E-CCBE-49E3-A49F-054EE92E1D0C",
            "versionEndIncluding": "13.2"
          },
          {
            "criteria": "cpe:2.3:a:eset:internet_security:1294:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "B429D321-4E00-451F-BFDF-A61BF20CCC77"
          },
          {
            "criteria": "cpe:2.3:a:eset:mail_security:*:*:*:*:*:domino:*:*",
            "vulnerable": true,
            "matchCriteriaId": "30D87B08-6868-41A2-93F5-1B732A07F652",
            "versionEndIncluding": "7.2"
          },
          {
            "criteria": "cpe:2.3:a:eset:mail_security:*:*:*:*:*:exchange_server:*:*",
            "vulnerable": true,
            "matchCriteriaId": "52072A74-AA1E-48B9-ACBC-B97BA215F9DC",
            "versionEndIncluding": "7.2"
          },
          {
            "criteria": "cpe:2.3:a:eset:nod32_antivirus:*:*:*:*:business:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "795CFE63-4F55-4B8E-9E4E-A6510895B637",
            "versionEndIncluding": "7.3"
          },
          {
            "criteria": "cpe:2.3:a:eset:nod32_antivirus:*:*:*:*:*:-:*:*",
            "vulnerable": true,
            "matchCriteriaId": "E95834A0-B683-4CCE-B3FB-1387071FB778",
            "versionEndIncluding": "13.2"
          },
          {
            "criteria": "cpe:2.3:a:eset:security:*:*:*:*:*:kerio:*:*",
            "vulnerable": true,
            "matchCriteriaId": "464764FF-8739-407A-B9D3-9F871E2933B2",
            "versionEndIncluding": "7.2"
          },
          {
            "criteria": "cpe:2.3:a:eset:security:*:*:*:*:*:sharepoint_server:*:*",
            "vulnerable": true,
            "matchCriteriaId": "A171F5E4-F90A-41CE-829B-5A2F0DC0BC86",
            "versionEndIncluding": "7.2"
          },
          {
            "criteria": "cpe:2.3:a:eset:smart_security:*:*:*:*:business:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "4F7FAB9F-5A35-4D61-B325-8286EB9A7577",
            "versionEndIncluding": "7.3"
          },
          {
            "criteria": "cpe:2.3:a:eset:smart_security:*:*:*:*:-:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "E4194A89-6382-4174-B592-15219A0EFFEE",
            "versionEndIncluding": "13.2"
          },
          {
            "criteria": "cpe:2.3:a:eset:smart_security:*:*:*:*:premium:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "DCD75955-648A-4644-ADB4-002673AA9E3D",
            "versionEndIncluding": "13.2"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

Overview

Risk scores

CVSS 3.1

CVSS 2.0

Weaknesses

Social media

Configurations

References