ubuntu-cve-2025-20128
Vulnerability from osv_ubuntu
Published
2025-01-23 00:00
Modified
2026-04-22 07:53
Summary
Details

A vulnerability in the Object Linking and Embedding 2 (OLE2) decryption routine of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to an integer underflow in a bounds check that allows for a heap buffer overflow read. An attacker could exploit this vulnerability by submitting a crafted file containing OLE2 content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the ClamAV scanning process, resulting in a DoS condition on the affected software. For a description of this vulnerability, see the . Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "clamav",
            "binary_version": "1.0.8+dfsg-0ubuntu0.24.04.1"
          },
          {
            "binary_name": "clamav-base",
            "binary_version": "1.0.8+dfsg-0ubuntu0.24.04.1"
          },
          {
            "binary_name": "clamav-daemon",
            "binary_version": "1.0.8+dfsg-0ubuntu0.24.04.1"
          },
          {
            "binary_name": "clamav-docs",
            "binary_version": "1.0.8+dfsg-0ubuntu0.24.04.1"
          },
          {
            "binary_name": "clamav-freshclam",
            "binary_version": "1.0.8+dfsg-0ubuntu0.24.04.1"
          },
          {
            "binary_name": "clamav-milter",
            "binary_version": "1.0.8+dfsg-0ubuntu0.24.04.1"
          },
          {
            "binary_name": "clamav-testfiles",
            "binary_version": "1.0.8+dfsg-0ubuntu0.24.04.1"
          },
          {
            "binary_name": "clamdscan",
            "binary_version": "1.0.8+dfsg-0ubuntu0.24.04.1"
          },
          {
            "binary_name": "libclamav11t64",
            "binary_version": "1.0.8+dfsg-0ubuntu0.24.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "clamav",
        "purl": "pkg:deb/ubuntu/clamav@1.0.8+dfsg-0ubuntu0.24.04.1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.8+dfsg-0ubuntu0.24.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.2+dfsg-1ubuntu1",
        "1.0.3+dfsg-2ubuntu1",
        "1.0.4+dfsg-0ubuntu1",
        "1.0.5+dfsg-1ubuntu1",
        "1.0.5+dfsg-1.1ubuntu2",
        "1.0.5+dfsg-1.1ubuntu3",
        "1.0.7+dfsg-0ubuntu0.24.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "A vulnerability in the Object Linking and Embedding 2 (OLE2) decryption routine of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to an integer underflow in a bounds check that allows for a heap buffer overflow read. An attacker could exploit this vulnerability by submitting a crafted file containing OLE2 content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the ClamAV scanning process, resulting in a DoS condition on the affected software. For a description of this vulnerability, see the . Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.",
  "id": "UBUNTU-CVE-2025-20128",
  "modified": "2026-04-22T07:53:21Z",
  "published": "2025-01-23T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-20128"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-20128"
    },
    {
      "type": "REPORT",
      "url": "https://blog.clamav.net/2025/01/clamav-142-and-108-security-patch.html"
    },
    {
      "type": "REPORT",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-ole2-H549rphA"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7229-1"
    }
  ],
  "related": [
    "USN-7229-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2025-20128"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Detection rules are retrieved from Rulezet.