Vulnerability-Lookup

CVE-2024-5803 (GCVE-0-2024-5803)

Vulnerability from cvelistv5 – Published: 2024-10-03 14:20 – Updated: 2024-10-03 15:38

Title

Local privelage escalation via COM hijacking

Summary

The AVGUI.exe of AVG/Avast Antivirus before versions before 24.1 can allow a local attacker to escalate privileges via an COM hijack in a time-of-check to time-of-use (TOCTOU) when self protection is disabled.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-10-03 15:35 UTC

CWE

CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

Assigner

NLOK CNA

CNA scorecard – unranked: 0 records in the last 180 days, 10 needed details

References

1 reference

URL	Tags
https://support.norton.com/sp/static/external/too…

Impacted products

2 products

Vendor	Product	Version	CPE status
AVG/Avast	Antivirus	Affected: <24.1 (custom)	guessed
avg	avg_anti-virus	Affected: 0 , < 24.1 (custom) cpe:2.3:a:avg:avg_anti-virus::::::::

Date Public

2024-10-03 14:19

Credits

Cirosec GmbH

Show details on NVD website

JSON

To clipboard

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}

FKIE_CVE-2024-5803

Vulnerability from fkie_nvd - Published: 2024-10-03 15:15 - Updated: 2026-06-17 08:16

Severity

7.5 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H

Summary

References

	URL	Tags
	security@nortonlifelock.com	https://support.norton.com/sp/static/external/tools/security-advisories.html

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows"
          ],
          "product": "Antivirus",
          "vendor": "AVG/Avast",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c24.1",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security@nortonlifelock.com"
    },
    {
      "affectedData": [
        {
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          "defaultStatus": "unknown",
          "product": "avg_anti-virus",
          "vendor": "avg",
          "versions": [
            {
              "lessThan": "24.1",
              "status": "affected",
              "version": "0",
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            }
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      ],
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    },
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      "value": "El AVGUI.exe de AVG/Avast Antivirus anteriores a la versi\u00f3n 24.1 puede permitir que un atacante local escale privilegios a trav\u00e9s de un secuestro de COM en un tiempo de verificaci\u00f3n a tiempo de uso (TOCTOU) cuando la autoprotecci\u00f3n est\u00e1 deshabilitada."
    }
  ],
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  "lastModified": "2026-06-17T08:16:40.753",
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}

GHSA-CCFH-V7CP-3943

Vulnerability from github – Published: 2024-10-03 15:30 – Updated: 2024-10-03 15:30

Details

Severity

7.5 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2024-5803"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-367"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-03T15:15:15Z",
    "severity": "HIGH"
  },
  "details": "The AVGUI.exe of AVG/Avast Antivirus before versions before 24.1 can allow a local attacker to escalate privileges via an COM hijack in a time-of-check to time-of-use (TOCTOU) when self protection is disabled.",
  "id": "GHSA-ccfh-v7cp-3943",
  "modified": "2024-10-03T15:30:50Z",
  "published": "2024-10-03T15:30:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-5803"
    },
    {
      "type": "WEB",
      "url": "https://support.norton.com/sp/static/external/tools/security-advisories.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

WID-SEC-W-2024-3068

Vulnerability from csaf_certbund - Published: 2024-10-03 22:00 - Updated: 2024-10-03 22:00

Summary

Avast Antivirus: Schwachstelle ermöglicht Privilegieneskalation

Severity

Mittel

Scope

1 vulnerability in this advisory, including CVE-2024-5803.

CVE-2024-5803

Es existiert eine Schwachstelle in Avast Antivirus und AVG Anti-Virus. Bei deaktiviertem Selbstschutz ist es möglich, aufgrund eines Time-of-Check to Time-of-Use (TOCTOU) Problems einen COM-Hijack durchzuführen. Ein lokaler Angreifer kann diese Schwachstelle ausnutzen, um seine Rechte zu erweitern. Zur erfolgreichen Ausnutzung ist eine Benutzeraktion erforderlich.

Known affected: 2 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

Publication & reservation Sightings KEV catalogs Other timestamps

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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CVE-2024-5803 (GCVE-0-2024-5803)

FKIE_CVE-2024-5803

GHSA-CCFH-V7CP-3943

WID-SEC-W-2024-3068

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Related by attack behaviour