Vulnerability-Lookup

CNVD-2020-29639

Vulnerability from cnvd - Published: 2020-05-24

Title

Cloud-init安全特征问题漏洞

Description

Cloud-init是一款用于云平台的虚拟机初始化工具。 cloud-init 19.4及之前版本中存在安全漏洞，该漏洞源于cloudinit/util.py文件中的rand_str调用了‘random.choice’函数。攻击者可利用该漏洞猜测出密码。

Severity

低

Patch Name

Cloud-init安全特征问题漏洞的补丁

Patch Description

Cloud-init是一款用于云平台的虚拟机初始化工具。 cloud-init 19.4及之前版本中存在安全漏洞，该漏洞源于cloudinit/util.py文件中的rand_str调用了‘random.choice’函数。攻击者可利用该漏洞猜测出密码。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

厂商已发布了漏洞修复程序，请及时关注更新: https://cloud-init.io/

Reference

https://bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/1860795

Impacted products

Name
cloud-init cloud-init <19.4

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-8631",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-8631"
    }
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  "description": "Cloud-init\u662f\u4e00\u6b3e\u7528\u4e8e\u4e91\u5e73\u53f0\u7684\u865a\u62df\u673a\u521d\u59cb\u5316\u5de5\u5177\u3002\n\ncloud-init 19.4\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8ecloudinit/util.py\u6587\u4ef6\u4e2d\u7684rand_str\u8c03\u7528\u4e86\u2018random.choice\u2019\u51fd\u6570\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u731c\u6d4b\u51fa\u5bc6\u7801\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0:\r\nhttps://cloud-init.io/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-29639",
  "openTime": "2020-05-24",
  "patchDescription": "Cloud-init\u662f\u4e00\u6b3e\u7528\u4e8e\u4e91\u5e73\u53f0\u7684\u865a\u62df\u673a\u521d\u59cb\u5316\u5de5\u5177\u3002\r\n\r\ncloud-init 19.4\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8ecloudinit/util.py\u6587\u4ef6\u4e2d\u7684rand_str\u8c03\u7528\u4e86\u2018random.choice\u2019\u51fd\u6570\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u731c\u6d4b\u51fa\u5bc6\u7801\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": "Cloud-init\u5b89\u5168\u7279\u5f81\u95ee\u9898\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "cloud-init cloud-init \u003c19.4"
  },
  "referenceLink": "https://bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/1860795",
  "serverity": "\u4f4e",
  "submitTime": "2020-02-17",
  "title": "Cloud-init\u5b89\u5168\u7279\u5f81\u95ee\u9898\u6f0f\u6d1e"
}

CVE-2020-8631 (GCVE-0-2020-8631)

Vulnerability from cvelistv5 – Published: 2020-02-05 13:39 – Updated: 2024-08-04 10:03

Summary

cloud-init through 19.4 relies on Mersenne Twister for a random password, which makes it easier for attackers to predict passwords, because rand_str in cloudinit/util.py calls the random.choice function.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root Scorecard

References

4 references

URL	Tags
https://github.com/canonical/cloud-init/pull/204	x_refsource_MISC
https://bugs.launchpad.net/ubuntu/+source/cloud-i…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

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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.
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CNVD-2020-29639

CVE-2020-8631 (GCVE-0-2020-8631)

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