Vulnerability-Lookup

CNVD-2021-31933

Vulnerability from cnvd - Published: 2021-04-30

Title

Kopano Groupware Core拒绝服务漏洞

Description

Kopano Groupware Core是荷兰Kopano公司的一个应用软件。提供Kopano堆栈的Groupware功能，并且在大多数情况下，它们是每个Kopano环境的核心。 Kopano Groupware Core存在拒绝服务漏洞，攻击者可利用该漏洞通过长HTTP头文件耗尽内存。

Severity

中

Formal description

厂商尚未提供漏洞修复方案，请关注厂商主页更新： https://kopano.com/releases/kopano-groupware-core-8-7-now-available/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-28994

Impacted products

Name
['Kopano Kopano Groupware Core <8.7.16', 'Kopano Kopano Groupware Core 9.，<9.1.0', 'Kopano Kopano Groupware Core 10.，<10.0.7', 'Kopano Kopano Groupware Core 11.，<11.0.1', 'Kopano Kopano Groupware Core >Zarafa 6.30.，<7.2']

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-28994",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-28994"
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  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-31933",
  "openTime": "2021-04-30",
  "products": {
    "product": [
      "Kopano Kopano Groupware Core \u003c8.7.16",
      "Kopano Kopano Groupware Core 9.*\uff0c\u003c9.1.0",
      "Kopano Kopano Groupware Core 10.*\uff0c\u003c10.0.7",
      "Kopano Kopano Groupware Core 11.*\uff0c\u003c11.0.1",
      "Kopano Kopano Groupware Core \u003eZarafa 6.30.*\uff0c\u003c7.2"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-28994",
  "serverity": "\u4e2d",
  "submitTime": "2021-04-02",
  "title": "Kopano Groupware Core\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2021-28994 (GCVE-0-2021-28994)

Vulnerability from cvelistv5 – Published: 2021-03-31 22:11 – Updated: 2024-08-03 21:55

Summary

kopano-ical (formerly zarafa-ical) in Kopano Groupware Core through 8.7.16, 9.x through 9.1.0, 10.x through 10.0.7, and 11.x through 11.0.1 and Zarafa 6.30.x through 7.2.x allows memory exhaustion via long HTTP headers.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

3 references

URL	Tags
https://www.openwall.com/lists/oss-security/2021/…	x_refsource_MISC
http://www.openwall.com/lists/oss-security/2021/04/01/1	mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/04/25/1	mailing-listx_refsource_MLIST

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JSON

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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.