Vulnerability-Lookup

CNVD-2021-28301

Vulnerability from cnvd - Published: 2021-04-15

Title

Clam AntiVirus拒绝服务漏洞（CNVD-2021-28301）

Description

Clam AntiVirus（ClamAV）是一个类UNIX系统上使用的反病毒软件包。主要应用于邮件服务器，采用多线程后台操作，可以自动升级病毒库。 Clam AntiVirus 0.103.0、0.103.1版存在拒绝服务漏洞。该漏洞源于变量初始化不当导致空指针读取。攻击者可通过向受影响的设备发送特制电子邮件利用该漏洞导致ClamAV扫描进程崩溃，从而可导致拒绝服务。

Severity

高

Patch Name

Clam AntiVirus拒绝服务漏洞（CNVD-2021-28301）的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://blog.clamav.net/2021/04/clamav-01032-security-patch-release.html

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-1404

Impacted products

Name
['ClamAV Clamav 0.103.0', 'ClamAV Clamav 0.103.1']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-1404",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-1404"
    }
  },
  "description": "Clam AntiVirus\uff08ClamAV\uff09\u662f\u4e00\u4e2a\u7c7bUNIX\u7cfb\u7edf\u4e0a\u4f7f\u7528\u7684\u53cd\u75c5\u6bd2\u8f6f\u4ef6\u5305\u3002\u4e3b\u8981\u5e94\u7528\u4e8e\u90ae\u4ef6\u670d\u52a1\u5668\uff0c\u91c7\u7528\u591a\u7ebf\u7a0b\u540e\u53f0\u64cd\u4f5c\uff0c\u53ef\u4ee5\u81ea\u52a8\u5347\u7ea7\u75c5\u6bd2\u5e93\u3002\n\nClam AntiVirus 0.103.0\u30010.103.1\u7248\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u53d8\u91cf\u521d\u59cb\u5316\u4e0d\u5f53\u5bfc\u81f4\u7a7a\u6307\u9488\u8bfb\u53d6\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5411\u53d7\u5f71\u54cd\u7684\u8bbe\u5907\u53d1\u9001\u7279\u5236\u7535\u5b50\u90ae\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4ClamAV\u626b\u63cf\u8fdb\u7a0b\u5d29\u6e83\uff0c\u4ece\u800c\u53ef\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://blog.clamav.net/2021/04/clamav-01032-security-patch-release.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-28301",
  "openTime": "2021-04-15",
  "patchDescription": "Clam AntiVirus\uff08ClamAV\uff09\u662f\u4e00\u4e2a\u7c7bUNIX\u7cfb\u7edf\u4e0a\u4f7f\u7528\u7684\u53cd\u75c5\u6bd2\u8f6f\u4ef6\u5305\u3002\u4e3b\u8981\u5e94\u7528\u4e8e\u90ae\u4ef6\u670d\u52a1\u5668\uff0c\u91c7\u7528\u591a\u7ebf\u7a0b\u540e\u53f0\u64cd\u4f5c\uff0c\u53ef\u4ee5\u81ea\u52a8\u5347\u7ea7\u75c5\u6bd2\u5e93\u3002\r\n\r\nClam AntiVirus 0.103.0\u30010.103.1\u7248\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u53d8\u91cf\u521d\u59cb\u5316\u4e0d\u5f53\u5bfc\u81f4\u7a7a\u6307\u9488\u8bfb\u53d6\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5411\u53d7\u5f71\u54cd\u7684\u8bbe\u5907\u53d1\u9001\u7279\u5236\u7535\u5b50\u90ae\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4ClamAV\u626b\u63cf\u8fdb\u7a0b\u5d29\u6e83\uff0c\u4ece\u800c\u53ef\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Clam AntiVirus\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-28301\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "ClamAV Clamav 0.103.0",
      "ClamAV Clamav 0.103.1"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-1404",
  "serverity": "\u9ad8",
  "submitTime": "2021-04-09",
  "title": "Clam AntiVirus\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-28301\uff09"
}

CVE-2021-1404 (GCVE-0-2021-1404)

Vulnerability from cvelistv5 – Published: 2021-04-08 04:30 – Updated: 2024-11-08 23:25

Title

Clam AntiVirus (ClamAV) Email Parser Denial of Service Vulnerability

Summary

A vulnerability in the PDF parsing module in Clam AntiVirus (ClamAV) Software versions 0.103.0 and 0.103.1 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper buffer size tracking that may result in a heap buffer over-read. An attacker could exploit this vulnerability by sending a crafted PDF file to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process to crash, resulting in a denial of service condition.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-08 20:02 UTC

CWE

CWE-20 - Improper Input Validation

Assigner

cisco CNA under the mitre root

CNA scorecard C 66/100 over 431 records in the last 180 days details

References

1 reference

URL	Tags
https://blog.clamav.net/2021/04/clamav-01032-secu…	vendor-advisoryx_refsource_CISCO

Impacted products

1 product

Vendor	Product	Version
Cisco	ClamAV	Affected: 0.103.0 Affected: 0.103.1

Date Public

2021-04-08 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T16:11:17.323Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_CISCO",
              "x_transferred"
            ],
            "url": "https://blog.clamav.net/2021/04/clamav-01032-security-patch-release.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-1404",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-08T20:02:31.585183Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-08T23:25:27.140Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "ClamAV",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "0.103.0"
            },
            {
              "status": "affected",
              "version": "0.103.1"
            }
          ]
        }
      ],
      "datePublic": "2021-04-08T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the PDF parsing module in Clam AntiVirus (ClamAV) Software versions 0.103.0 and 0.103.1 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper buffer size tracking that may result in a heap buffer over-read. An attacker could exploit this vulnerability by sending a crafted PDF file to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process to crash, resulting in a denial of service condition."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
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              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-04-13T13:00:26.000Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory",
            "x_refsource_CISCO"
          ],
          "url": "https://blog.clamav.net/2021/04/clamav-01032-security-patch-release.html"
        }
      ],
      "source": {
        "advisory": "https://blog.clamav.net/2021/04/clamav-01032-security-patch-release.html",
        "discovery": "UNKNOWN"
      },
      "title": "Clam AntiVirus (ClamAV) Email Parser Denial of Service Vulnerability",
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "psirt@cisco.com",
          "DATE_PUBLIC": "2021-04-08T12:08:00.000Z",
          "ID": "CVE-2021-1404",
          "STATE": "PUBLIC",
          "TITLE": "Clam AntiVirus (ClamAV) Email Parser Denial of Service Vulnerability"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "ClamAV",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "=",
                            "version_value": "0.103.0"
                          },
                          {
                            "version_affected": "=",
                            "version_value": "0.103.1"
                          }
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                      }
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                "vendor_name": "Cisco"
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        },
        "references": {
          "reference_data": [
            {
              "name": "https://blog.clamav.net/2021/04/clamav-01032-security-patch-release.html",
              "refsource": "CISCO",
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    "dateReserved": "2020-11-13T00:00:00.000Z",
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    "state": "PUBLISHED"
  },
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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

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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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