github - ghsa-cj5g-8945-q3rg

GHSA-CJ5G-8945-Q3RG

Vulnerability from github – Published: 2025-05-28 15:34 – Updated: 2025-05-28 15:34

Details

Lack of file validation in do_update_vps in Avast Business Antivirus for Linux 4.5 on Linux allows local user to spoof or tamper with the update file via an unverified file write.

Severity ?

7.3 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2025-4134"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-552"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-28T14:15:34Z",
    "severity": "HIGH"
  },
  "details": "Lack of file validation in do_update_vps in Avast Business Antivirus for Linux 4.5 on Linux allows local user to spoof or tamper with the update file via an unverified file write.",
  "id": "GHSA-cj5g-8945-q3rg",
  "modified": "2025-05-28T15:34:34Z",
  "published": "2025-05-28T15:34:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-4134"
    },
    {
      "type": "WEB",
      "url": "https://www.gendigital.com/us/en/contact-us/security-advisories"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-4134 (GCVE-0-2025-4134)

Vulnerability from cvelistv5 – Published: 2025-05-28 13:53 – Updated: 2025-05-28 14:06

Summary

Lack of file validation in do_update_vps in Avast Business Antivirus for Linux 4.5 on Linux allows local user to spoof or tamper with the update file via an unverified file write.

Severity ?

7.3 (High)


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

CWE

CWE-552 - Files or Directories Accessible to External Parties

Assigner

NLOK

References

URL

Tags

https://www.gendigital.com/us/en/contact-us/secur…

Impacted products

	Vendor	Product	Version
	Avast	Avast Business Antivirus	Affected: 4.5.1 (customLack of file validation in Avast Business Antivirus for Linux allows writing untrusted update files.)

Credits

FIS Securtiy Nông Hoàng Tú

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-4134",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-05-28T14:06:29.597667Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-05-28T14:06:40.254Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Linux"
          ],
          "product": "Avast Business Antivirus",
          "vendor": "Avast",
          "versions": [
            {
              "status": "affected",
              "version": "4.5.1",
              "versionType": "customLack of file validation in Avast Business Antivirus for Linux allows writing untrusted update files."
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "FIS Securtiy"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "N\u00f4ng Ho\u00e0ng T\u00fa"
        }
      ],
      "descriptions": [
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          "lang": "en",
          "supportingMedia": [
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              "base64": false,
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            }
          ],
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        }
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      "impacts": [
        {
          "capecId": "CAPEC-148",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-148 Content Spoofing"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-552",
              "description": "CWE-552 Files or Directories Accessible to External Parties",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-28T13:53:33.351Z",
        "orgId": "dbd8429d-f261-4b1e-94cc-ae3132817e2e",
        "shortName": "NLOK"
      },
      "references": [
        {
          "url": "https://www.gendigital.com/us/en/contact-us/security-advisories/"
        }
      ],
      "solutions": [
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          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Fixed in V4.6 released 03/FEB/2025, ugrade to latest version."
            }
          ],
          "value": "Fixed in V4.6 released 03/FEB/2025, ugrade to latest version."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Lack of file validation in Avast Business Antivirus for Linux allows writing untrusted update files",
      "x_generator": {
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      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "dbd8429d-f261-4b1e-94cc-ae3132817e2e",
    "assignerShortName": "NLOK",
    "cveId": "CVE-2025-4134",
    "datePublished": "2025-05-28T13:53:26.499Z",
    "dateReserved": "2025-04-30T12:38:11.230Z",
    "dateUpdated": "2025-05-28T14:06:40.254Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-CJ5G-8945-Q3RG

CVE-2025-4134 (GCVE-0-2025-4134)

Tags

Sightings

Nomenclature