Vulnerability-Lookup

GHSA-4J2P-J8C6-H5P8

Vulnerability from github – Published: 2021-12-28 00:00 – Updated: 2022-07-13 00:01

Details

Privilege escalation vulnerability in Avast Antivirus prior to 20.4 allows a local user to gain elevated privileges by "hollowing" trusted process which could lead to the bypassing of Avast self-defense.

Severity

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2021-45339"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-269"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-12-27T14:15:00Z",
    "severity": "HIGH"
  },
  "details": "Privilege escalation vulnerability in Avast Antivirus prior to 20.4 allows a local user to gain elevated privileges by \"hollowing\" trusted process which could lead to the bypassing of Avast self-defense.",
  "id": "GHSA-4j2p-j8c6-h5p8",
  "modified": "2022-07-13T00:01:50Z",
  "published": "2021-12-28T00:00:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-45339"
    },
    {
      "type": "WEB",
      "url": "https://github.com/the-deniss/Vulnerability-Disclosures/tree/main/CVE-2021-AVST0"
    },
    {
      "type": "WEB",
      "url": "https://www.avast.com/hacker-hall-of-fame/en/researcher-david-eade-reports-antitrack-bug-to-avast-0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2021-45339 (GCVE-0-2021-45339)

Vulnerability from cvelistv5 – Published: 2021-12-27 12:57 – Updated: 2024-08-04 04:39

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2280 records in the last 180 days details

References

2 references

URL	Tags
https://www.avast.com/hacker-hall-of-fame/en/rese…	x_refsource_MISC
https://github.com/the-deniss/Vulnerability-Discl…	x_refsource_MISC

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          "dateUpdated": "2024-08-04T04:39:20.486Z",
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            "url": "https://www.avast.com/hacker-hall-of-fame/en/researcher-david-eade-reports-antitrack-bug-to-avast-0"
          },
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              "x_transferred"
            ],
            "url": "https://github.com/the-deniss/Vulnerability-Disclosures/tree/main/CVE-2021-AVST0"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
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          "vendor": "n/a",
          "versions": [
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        }
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          "ID": "CVE-2021-45339",
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    "dateReserved": "2021-12-20T00:00:00.000Z",
    "dateUpdated": "2024-08-04T04:39:20.486Z",
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  },
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  "dataVersion": "5.1"
}

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

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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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