Vulnerability-Lookup

CNVD-2020-58774

Vulnerability from cnvd - Published: 2020-10-26

Title

ClamXAV数据伪造问题漏洞

Description

ClamXAV是英国clamxav的Mac os平台上的一款非常给力的Mac杀毒软件。ClamXav for Mac不仅能对恶意软件进行扫描，而且能针对你的Mac进行实时病毒查杀，它采用了非常流行ClamAV的开源杀毒引擎作为后端，并具有检测Windows和Mac威胁的能力。 ClamXAV 3 3.1.1之前版本存在安全漏洞，该漏洞源于辅助工具中的客户端验证未能充分。攻击者可利用该漏洞使用正确签名的ClamXAV 2副本(使用注入的恶意dylib运行)与ClamXAV 3的帮助工具通信并执行特权操作。

Severity

中

Patch Name

ClamXAV数据伪造问题漏洞的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://gist.github.com/matt-clamxav/d341bd48f12a14d2147f8ce860bb36d0

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-26893

Impacted products

Name
Clamxav ClamXAV <3 3.1.1

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-26893",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-26893"
    }
  },
  "description": "ClamXAV\u662f\u82f1\u56fdclamxav\u7684Mac os\u5e73\u53f0\u4e0a\u7684\u4e00\u6b3e\u975e\u5e38\u7ed9\u529b\u7684Mac\u6740\u6bd2\u8f6f\u4ef6\u3002ClamXav for Mac\u4e0d\u4ec5\u80fd\u5bf9\u6076\u610f\u8f6f\u4ef6\u8fdb\u884c\u626b\u63cf\uff0c\u800c\u4e14\u80fd\u9488\u5bf9\u4f60\u7684Mac\u8fdb\u884c\u5b9e\u65f6\u75c5\u6bd2\u67e5\u6740\uff0c\u5b83\u91c7\u7528\u4e86\u975e\u5e38\u6d41\u884cClamAV\u7684\u5f00\u6e90\u6740\u6bd2\u5f15\u64ce\u4f5c\u4e3a\u540e\u7aef\uff0c\u5e76\u5177\u6709\u68c0\u6d4bWindows\u548cMac\u5a01\u80c1\u7684\u80fd\u529b\u3002\n\nClamXAV 3 3.1.1\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u8f85\u52a9\u5de5\u5177\u4e2d\u7684\u5ba2\u6237\u7aef\u9a8c\u8bc1\u672a\u80fd\u5145\u5206\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u4f7f\u7528\u6b63\u786e\u7b7e\u540d\u7684ClamXAV 2\u526f\u672c(\u4f7f\u7528\u6ce8\u5165\u7684\u6076\u610fdylib\u8fd0\u884c)\u4e0eClamXAV 3\u7684\u5e2e\u52a9\u5de5\u5177\u901a\u4fe1\u5e76\u6267\u884c\u7279\u6743\u64cd\u4f5c\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://gist.github.com/matt-clamxav/d341bd48f12a14d2147f8ce860bb36d0",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-58774",
  "openTime": "2020-10-26",
  "patchDescription": "ClamXAV\u662f\u82f1\u56fdclamxav\u7684Mac os\u5e73\u53f0\u4e0a\u7684\u4e00\u6b3e\u975e\u5e38\u7ed9\u529b\u7684Mac\u6740\u6bd2\u8f6f\u4ef6\u3002ClamXav for Mac\u4e0d\u4ec5\u80fd\u5bf9\u6076\u610f\u8f6f\u4ef6\u8fdb\u884c\u626b\u63cf\uff0c\u800c\u4e14\u80fd\u9488\u5bf9\u4f60\u7684Mac\u8fdb\u884c\u5b9e\u65f6\u75c5\u6bd2\u67e5\u6740\uff0c\u5b83\u91c7\u7528\u4e86\u975e\u5e38\u6d41\u884cClamAV\u7684\u5f00\u6e90\u6740\u6bd2\u5f15\u64ce\u4f5c\u4e3a\u540e\u7aef\uff0c\u5e76\u5177\u6709\u68c0\u6d4bWindows\u548cMac\u5a01\u80c1\u7684\u80fd\u529b\u3002\r\n\r\nClamXAV 3 3.1.1\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u8f85\u52a9\u5de5\u5177\u4e2d\u7684\u5ba2\u6237\u7aef\u9a8c\u8bc1\u672a\u80fd\u5145\u5206\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u4f7f\u7528\u6b63\u786e\u7b7e\u540d\u7684ClamXAV 2\u526f\u672c(\u4f7f\u7528\u6ce8\u5165\u7684\u6076\u610fdylib\u8fd0\u884c)\u4e0eClamXAV 3\u7684\u5e2e\u52a9\u5de5\u5177\u901a\u4fe1\u5e76\u6267\u884c\u7279\u6743\u64cd\u4f5c\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": "ClamXAV\u6570\u636e\u4f2a\u9020\u95ee\u9898\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Clamxav ClamXAV \u003c3 3.1.1"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-26893",
  "serverity": "\u4e2d",
  "submitTime": "2020-10-19",
  "title": "ClamXAV\u6570\u636e\u4f2a\u9020\u95ee\u9898\u6f0f\u6d1e"
}

CVE-2020-26893 (GCVE-0-2020-26893)

Vulnerability from cvelistv5 – Published: 2020-10-16 12:53 – Updated: 2024-08-04 16:03

Summary

An issue was discovered in ClamXAV 3 before 3.1.1. A malicious actor could use a properly signed copy of ClamXAV 2 (running with an injected malicious dylib) to communicate with ClamXAV 3's helper tool and perform privileged operations. This occurs because of inadequate client verification in the helper tool.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://gist.github.com/matt-clamxav/d341bd48f12a…	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T16:03:22.896Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://gist.github.com/matt-clamxav/d341bd48f12a14d2147f8ce860bb36d0"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in ClamXAV 3 before 3.1.1. A malicious actor could use a properly signed copy of ClamXAV 2 (running with an injected malicious dylib) to communicate with ClamXAV 3\u0027s helper tool and perform privileged operations. This occurs because of inadequate client verification in the helper tool."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-10-16T12:53:54.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://gist.github.com/matt-clamxav/d341bd48f12a14d2147f8ce860bb36d0"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2020-26893",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
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        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
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              "lang": "eng",
              "value": "An issue was discovered in ClamXAV 3 before 3.1.1. A malicious actor could use a properly signed copy of ClamXAV 2 (running with an injected malicious dylib) to communicate with ClamXAV 3\u0027s helper tool and perform privileged operations. This occurs because of inadequate client verification in the helper tool."
            }
          ]
        },
        "problemtype": {
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                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://gist.github.com/matt-clamxav/d341bd48f12a14d2147f8ce860bb36d0",
              "refsource": "MISC",
              "url": "https://gist.github.com/matt-clamxav/d341bd48f12a14d2147f8ce860bb36d0"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2020-26893",
    "datePublished": "2020-10-16T12:53:54.000Z",
    "dateReserved": "2020-10-08T00:00:00.000Z",
    "dateUpdated": "2024-08-04T16:03:22.896Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "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.

Detection rules are retrieved from Rulezet.

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.