github - ghsa-h5fr-q576-q7rv

GHSA-H5FR-Q576-Q7RV

Vulnerability from github – Published: 2024-09-05 00:31 – Updated: 2025-11-04 00:31

Details

The vulnerability is due to allowing the ClamD process to write to its log file while privileged without checking if the logfile has been replaced with a symbolic link. An attacker could exploit this vulnerability if they replace the ClamD log file with a symlink to a critical system file and then find a way to restart the ClamD process. An exploit could allow the attacker to corrupt a critical system file by appending ClamD log messages after restart.

Severity ?

6.1 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2024-20506"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-754"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-04T22:15:04Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability in the ClamD service module of Clam AntiVirus (ClamAV) versions 1.4.0, 1.3.2 and prior versions, all 1.2.x versions, 1.0.6 and prior versions, all 0.105.x versions, all 0.104.x versions, and 0.103.11 and all prior versions could allow an authenticated, local attacker to corrupt critical system files.\n\nThe vulnerability is due to allowing the ClamD process to write to its log file while privileged without checking if the logfile has been replaced with a symbolic link. An attacker could exploit this vulnerability if they replace the ClamD log file with a symlink to a critical system file and then find a way to restart the ClamD process. An exploit could allow the attacker to corrupt a critical system file by appending ClamD log messages after restart.",
  "id": "GHSA-h5fr-q576-q7rv",
  "modified": "2025-11-04T00:31:23Z",
  "published": "2024-09-05T00:31:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-20506"
    },
    {
      "type": "WEB",
      "url": "https://blog.clamav.net/2024/09/clamav-141-132-107-and-010312-security.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/12/msg00004.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-20506 (GCVE-0-2024-20506)

Vulnerability from cvelistv5 – Published: 2024-09-04 21:28 – Updated: 2025-11-03 21:52

Summary

A vulnerability in the ClamD service module of Clam AntiVirus (ClamAV) versions 1.4.0, 1.3.2 and prior versions, all 1.2.x versions, 1.0.6 and prior versions, all 0.105.x versions, all 0.104.x versions, and 0.103.11 and all prior versions could allow an authenticated, local attacker to corrupt critical system files. The vulnerability is due to allowing the ClamD process to write to its log file while privileged without checking if the logfile has been replaced with a symbolic link. An attacker could exploit this vulnerability if they replace the ClamD log file with a symlink to a critical system file and then find a way to restart the ClamD process. An exploit could allow the attacker to corrupt a critical system file by appending ClamD log messages after restart.

Severity ?

6.1 (Medium)


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

CWE

CWE-754 - Improper Check for Unusual or Exceptional Conditions

Assigner

cisco

References

URL

Tags

https://blog.clamav.net/2024/09/clamav-141-132-10…

Impacted products

	Vendor	Product	Version
	Cisco	ClamAV	Affected: 1.4.0 Affected: 1.3.2 Affected: 1.0.6 Affected: 1.0.5 Affected: 1.0.4 Affected: 1.0.3 Affected: 1.0.2 Affected: 1.0.1 Affected: 1.0.0 Affected: 1.2.x Affected: 0.105.x Affected: 0.104.x Affected: 0.103.11 Affected: 0.103.10 Affected: 0.103.9 Affected: 0.103.8 Affected: 0.103.7 Affected: 0.103.6 Affected: 0.103.5 Affected: 0.103.4 Affected: 0.103.3 Affected: 0.103.2 Affected: 0.103.1 Affected: 0.103.0

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-20506",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-05T13:34:43.487532Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-754",
                "description": "CWE-754 Improper Check for Unusual or Exceptional Conditions",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-03-25T16:59:30.069Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T21:52:31.990Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2024/12/msg00004.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "ClamAV",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "1.4.0"
            },
            {
              "status": "affected",
              "version": "1.3.2"
            },
            {
              "status": "affected",
              "version": "1.0.6"
            },
            {
              "status": "affected",
              "version": "1.0.5"
            },
            {
              "status": "affected",
              "version": "1.0.4"
            },
            {
              "status": "affected",
              "version": "1.0.3"
            },
            {
              "status": "affected",
              "version": "1.0.2"
            },
            {
              "status": "affected",
              "version": "1.0.1"
            },
            {
              "status": "affected",
              "version": "1.0.0"
            },
            {
              "status": "affected",
              "version": "1.2.x"
            },
            {
              "status": "affected",
              "version": "0.105.x"
            },
            {
              "status": "affected",
              "version": "0.104.x"
            },
            {
              "status": "affected",
              "version": "0.103.11"
            },
            {
              "status": "affected",
              "version": "0.103.10"
            },
            {
              "status": "affected",
              "version": "0.103.9"
            },
            {
              "status": "affected",
              "version": "0.103.8"
            },
            {
              "status": "affected",
              "version": "0.103.7"
            },
            {
              "status": "affected",
              "version": "0.103.6"
            },
            {
              "status": "affected",
              "version": "0.103.5"
            },
            {
              "status": "affected",
              "version": "0.103.4"
            },
            {
              "status": "affected",
              "version": "0.103.3"
            },
            {
              "status": "affected",
              "version": "0.103.2"
            },
            {
              "status": "affected",
              "version": "0.103.1"
            },
            {
              "status": "affected",
              "version": "0.103.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the ClamD service module of Clam AntiVirus (ClamAV) versions 1.4.0, 1.3.2 and prior versions, all 1.2.x versions, 1.0.6 and prior versions, all 0.105.x versions, all 0.104.x versions, and 0.103.11 and all prior versions could allow an authenticated, local attacker to corrupt critical system files.\r\n\r\nThe vulnerability is due to allowing the ClamD process to write to its log file while privileged without checking if the logfile has been replaced with a symbolic link. An attacker could exploit this vulnerability if they replace the ClamD log file with a symlink to a critical system file and then find a way to restart the ClamD process. An exploit could allow the attacker to corrupt a critical system file by appending ClamD log messages after restart."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H",
            "version": "3.1"
          },
          "format": "cvssV3_1"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-09-04T21:28:54.812Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "url": "https://blog.clamav.net/2024/09/clamav-141-132-107-and-010312-security.html"
        }
      ],
      "source": {
        "defects": [
          "CSCwk31741"
        ],
        "discovery": "EXTERNAL"
      },
      "title": "ClamAV Privilege Handling Escalation Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2024-20506",
    "datePublished": "2024-09-04T21:28:54.812Z",
    "dateReserved": "2023-11-08T15:08:07.688Z",
    "dateUpdated": "2025-11-03T21:52:31.990Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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-H5FR-Q576-Q7RV

CVE-2024-20506 (GCVE-0-2024-20506)

Tags

Sightings

Nomenclature