Vulnerability-Lookup

CNVD-2021-58660

Vulnerability from cnvd - Published: 2021-08-05

Title

Acronis True Image拒绝服务漏洞

Description

Acronis True Image是新加坡安克诺斯（Acronis）的一款著名的数据备份还原软件。该软件可用于创建驱动器和磁盘映像，并在需要干净系统时可以还原镜像。 Acronis True Image 2020 24.5.22510版本存在拒绝服务漏洞，该漏洞源于程序的日志以可预测的模式生成，允许非特权用户创建一个尚未创建的日志文件到反勒索软件服务.exe的硬链接。攻击者可利用该漏洞在每次重启时导致崩溃。

Severity

低

Formal description

厂商尚未提供漏洞修复方案，请关注厂商主页更新： https://www.acronis.com/

Reference

https://danishcyberdefence.dk/blog

Impacted products

Name
Acronis True Image 2020 24.5.22510

Show details on source website

JSON

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    "cve": {
      "cveNumber": "CVE-2020-9451",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-9451"
    }
  },
  "description": "Acronis True Image\u662f\u65b0\u52a0\u5761\u5b89\u514b\u8bfa\u65af\uff08Acronis\uff09\u7684\u4e00\u6b3e\u8457\u540d\u7684\u6570\u636e\u5907\u4efd\u8fd8\u539f\u8f6f\u4ef6\u3002\u8be5\u8f6f\u4ef6\u53ef\u7528\u4e8e\u521b\u5efa\u9a71\u52a8\u5668\u548c\u78c1\u76d8\u6620\u50cf\uff0c\u5e76\u5728\u9700\u8981\u5e72\u51c0\u7cfb\u7edf\u65f6\u53ef\u4ee5\u8fd8\u539f\u955c\u50cf\u3002\n\nAcronis True Image 2020 24.5.22510\u7248\u672c\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u7684\u65e5\u5fd7\u4ee5\u53ef\u9884\u6d4b\u7684\u6a21\u5f0f\u751f\u6210\uff0c\u5141\u8bb8\u975e\u7279\u6743\u7528\u6237\u521b\u5efa\u4e00\u4e2a\u5c1a\u672a\u521b\u5efa\u7684\u65e5\u5fd7\u6587\u4ef6\u5230\u53cd\u52d2\u7d22\u8f6f\u4ef6\u670d\u52a1.exe\u7684\u786c\u94fe\u63a5\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5728\u6bcf\u6b21\u91cd\u542f\u65f6\u5bfc\u81f4\u5d29\u6e83\u3002",
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  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-58660",
  "openTime": "2021-08-05",
  "products": {
    "product": "Acronis True Image 2020 24.5.22510"
  },
  "referenceLink": "https://danishcyberdefence.dk/blog",
  "serverity": "\u4f4e",
  "submitTime": "2021-05-26",
  "title": "Acronis True Image\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2020-9451 (GCVE-0-2020-9451)

Vulnerability from cvelistv5 – Published: 2021-05-25 11:01 – Updated: 2024-08-04 10:26

Summary

An issue was discovered in Acronis True Image 2020 24.5.22510. anti_ransomware_service.exe keeps a log in a folder where unprivileged users have write permissions. The logs are generated in a predictable pattern, allowing an unprivileged user to create a hardlink from a (not yet created) log file to anti_ransomware_service.exe. On reboot, this forces the anti_ransomware_service to try to write its log into its own process, crashing in a SHARING VIOLATION. This crash occurs on every reboot.

Severity

No CVSS data available.

CWE

Assigner

mitre

References

3 references

URL	Tags
https://www.acronis.com	x_refsource_MISC
https://danishcyberdefence.dk/blog	x_refsource_MISC
https://madsjoensen.dk/cve-2020-9451/	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

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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.

Action not permitted

CNVD-2021-58660

CVE-2020-9451 (GCVE-0-2020-9451)

Tags

Sightings

Nomenclature