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CVE-2005-1923

Status: ModifiedLow (2.6)—

The ENSURE_BITS macro in mszipd.c for Clam AntiVirus (ClamAV) 0.83, and other versions vefore 0.86, allows remote attackers to cause a denial of service (CPU consumption by infinite loop) via a cabinet (CAB) file with the cffile_FolderOffset field set to 0xff, which causes a zero-length read.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Clam Anti-virus — Clamav

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2005-1923",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 2.6,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:H/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "HIGH",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 4.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2005-07-05T04:00:00.000",
  "references": [
    {
      "url": "http://www.debian.org/security/2005/dsa-737",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.idefense.com/application/poi/display?id=275&type=vulnerabilities",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.debian.org/security/2005/dsa-737",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.idefense.com/application/poi/display?id=275&type=vulnerabilities",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The ENSURE_BITS macro in mszipd.c for Clam AntiVirus (ClamAV) 0.83, and other versions vefore 0.86, allows remote attackers to cause a denial of service (CPU consumption by infinite loop) via a cabinet (CAB) file with the cffile_FolderOffset field set to 0xff, which causes a zero-length read."
    }
  ],
  "lastModified": "2026-06-16T22:13:55.520",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:clam_anti-virus:clamav:0.83:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E58A6CBC-ED1C-430D-8F43-88694971A850"
            },
            {
              "criteria": "cpe:2.3:a:clam_anti-virus:clamav:0.84_rc1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3E389E1C-46A6-4B5C-9091-8AAE5FFDC4B8"
            },
            {
              "criteria": "cpe:2.3:a:clam_anti-virus:clamav:0.84_rc2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F1ADBDEE-1421-42E5-8DE2-404087613B75"
            },
            {
              "criteria": "cpe:2.3:a:clam_anti-virus:clamav:0.85:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "EDF94B1E-E8D4-4952-9081-1254F335445D"
            },
            {
              "criteria": "cpe:2.3:a:clam_anti-virus:clamav:0.85.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8657268E-4C78-4565-9966-7329095A7905"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}