Vulnerability-Lookup

CNVD-2019-29129

Vulnerability from cnvd - Published: 2019-08-28

Title

Avast Antivirus本地拒绝服务漏洞

Description

Avast Antivirus是捷克爱维士（Avast）公司的一套杀毒软件。 Avast Antivirus 19.4之前版本中存在安全漏洞。攻击者可利用该漏洞绕过Avast自我保护机制，重命名重要的二进制文件（例如：AvastSvc.exe文件），造成设备无法启动。

Severity

低

Patch Name

Avast Antivirus本地拒绝服务漏洞的补丁

Patch Description

Avast Antivirus是捷克爱维士（Avast）公司的一套杀毒软件。 Avast Antivirus 19.4之前版本中存在安全漏洞。攻击者可利用该漏洞绕过Avast自我保护机制，重命名重要的二进制文件（例如：AvastSvc.exe文件），造成设备无法启动。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

目前厂商已发布升级补丁以修复漏洞，详情请关注厂商主页： https://www.avast.com/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2019-11230

Impacted products

Name
Avast Antivirus <19.4

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-11230"
    }
  },
  "description": "Avast Antivirus\u662f\u6377\u514b\u7231\u7ef4\u58eb\uff08Avast\uff09\u516c\u53f8\u7684\u4e00\u5957\u6740\u6bd2\u8f6f\u4ef6\u3002\n\nAvast Antivirus 19.4\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7Avast\u81ea\u6211\u4fdd\u62a4\u673a\u5236\uff0c\u91cd\u547d\u540d\u91cd\u8981\u7684\u4e8c\u8fdb\u5236\u6587\u4ef6\uff08\u4f8b\u5982\uff1aAvastSvc.exe\u6587\u4ef6\uff09\uff0c\u9020\u6210\u8bbe\u5907\u65e0\u6cd5\u542f\u52a8\u3002",
  "discovererName": "Conor McErlane",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8be6\u60c5\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\uff1a\r\nhttps://www.avast.com/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-29129",
  "openTime": "2019-08-28",
  "patchDescription": "Avast Antivirus\u662f\u6377\u514b\u7231\u7ef4\u58eb\uff08Avast\uff09\u516c\u53f8\u7684\u4e00\u5957\u6740\u6bd2\u8f6f\u4ef6\u3002\r\n\r\nAvast Antivirus 19.4\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7Avast\u81ea\u6211\u4fdd\u62a4\u673a\u5236\uff0c\u91cd\u547d\u540d\u91cd\u8981\u7684\u4e8c\u8fdb\u5236\u6587\u4ef6\uff08\u4f8b\u5982\uff1aAvastSvc.exe\u6587\u4ef6\uff09\uff0c\u9020\u6210\u8bbe\u5907\u65e0\u6cd5\u542f\u52a8\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": "Avast Antivirus\u672c\u5730\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Avast Antivirus \u003c19.4"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2019-11230",
  "serverity": "\u4f4e",
  "submitTime": "2019-07-22",
  "title": "Avast Antivirus\u672c\u5730\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2019-11230 (GCVE-0-2019-11230)

Vulnerability from cvelistv5 – Published: 2019-07-18 16:50 – Updated: 2024-08-04 22:48

Summary

In Avast Antivirus before 19.4, a local administrator can trick the product into renaming arbitrary files by replacing the Logs\Update.log file with a symlink. The next time the product attempts to write to the log file, the target of the symlink is renamed. This defect can be exploited to rename a critical product file (e.g., AvastSvc.exe), causing the product to fail to start on the next system restart.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

2 references

URL	Tags
http://www.mcerlane.co.uk/CVE-2019-11230/	x_refsource_MISC
http://www.securityfocus.com/bid/109344	vdb-entryx_refsource_BID

Show details on NVD website

JSON

To clipboard

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          }
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          ],
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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.