Vulnerability-Lookup

CNVD-2021-46557

Vulnerability from cnvd - Published: 2021-07-02

Title

Moodle命令执行漏洞

Description

Moodle是一个学习平台，旨在为教育工作者、管理员及学习者提供一个用于创建个性化学习环境的系统。 Moodle 3.10版中默认的旧版拼写检查器插件存在命令执行漏洞。攻击者可通过一系列特制HTTP请求利用该漏洞实现命令执行。

Severity

高

Formal description

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

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-21809

Impacted products

Name
Moodle Moodle 3.10

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-21809"
    }
  },
  "description": "Moodle\u662f\u4e00\u4e2a\u5b66\u4e60\u5e73\u53f0\uff0c\u65e8\u5728\u4e3a\u6559\u80b2\u5de5\u4f5c\u8005\u3001\u7ba1\u7406\u5458\u53ca\u5b66\u4e60\u8005\u63d0\u4f9b\u4e00\u4e2a\u7528\u4e8e\u521b\u5efa\u4e2a\u6027\u5316\u5b66\u4e60\u73af\u5883\u7684\u7cfb\u7edf\u3002\n\nMoodle 3.10\u7248\u4e2d\u9ed8\u8ba4\u7684\u65e7\u7248\u62fc\u5199\u68c0\u67e5\u5668\u63d2\u4ef6\u5b58\u5728\u547d\u4ee4\u6267\u884c\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u4e00\u7cfb\u5217\u7279\u5236HTTP\u8bf7\u6c42\u5229\u7528\u8be5\u6f0f\u6d1e\u5b9e\u73b0\u547d\u4ee4\u6267\u884c\u3002",
  "formalWay": "\u5382\u5546\u5c1a\u672a\u63d0\u4f9b\u6f0f\u6d1e\u4fee\u590d\u65b9\u6848\uff0c\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u66f4\u65b0\uff1a\r\nhttps://moodle.org/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-46557",
  "openTime": "2021-07-02",
  "products": {
    "product": "Moodle Moodle 3.10"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-21809",
  "serverity": "\u9ad8",
  "submitTime": "2021-06-25",
  "title": "Moodle\u547d\u4ee4\u6267\u884c\u6f0f\u6d1e"
}

CVE-2021-21809 (GCVE-0-2021-21809)

Vulnerability from cvelistv5 – Published: 2021-06-23 21:25 – Updated: 2024-08-03 18:23

Summary

A command execution vulnerability exists in the default legacy spellchecker plugin in Moodle 3.10. A specially crafted series of HTTP requests can lead to command execution. An attacker must have administrator privileges to exploit this vulnerabilities.

Severity

8.2 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:L

CWE

OS command injection

Assigner

talos mitre root

References

2 references

URL	Tags
https://talosintelligence.com/vulnerability_repor…	x_refsource_MISC
http://packetstormsecurity.com/files/164481/Moodl…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	Moodle	Affected: Moodle 3.10

Show details on NVD website

JSON

To clipboard

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            "url": "http://packetstormsecurity.com/files/164481/Moodle-SpellChecker-Path-Authenticated-Remote-Command-Execution.html"
          }
        ],
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            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
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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.