Vulnerability-Lookup

CNVD-2020-35966

Vulnerability from cnvd - Published: 2020-07-02

Title

Zephyr缓冲区溢出漏洞（CNVD-2020-35966）

Description

Zephyr是美国Linux基金会的一套开源的小型的可缩放的实时操作系统。 Zephyr 2.2.0及之后版本中的MQTT解析代码存在缓冲区溢出漏洞，该漏洞源于程序未能充分验证length字段。攻击者可利用该漏洞可能执行代码。

Severity

高

Patch Name

Zephyr缓冲区溢出漏洞（CNVD-2020-35966）的补丁

Patch Description

Zephyr是美国Linux基金会的一套开源的小型的可缩放的实时操作系统。 Zephyr 2.2.0及之后版本中的MQTT解析代码存在缓冲区溢出漏洞，该漏洞源于程序未能充分验证length字段。攻击者可利用该漏洞可能执行代码。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

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10071

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-10071

Impacted products

Name
Zephyr Zephyr >=2.2.0

Show details on source website

JSON

To clipboard

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  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-10071"
    }
  },
  "description": "Zephyr\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u7684\u4e00\u5957\u5f00\u6e90\u7684\u5c0f\u578b\u7684\u53ef\u7f29\u653e\u7684\u5b9e\u65f6\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nZephyr 2.2.0\u53ca\u4e4b\u540e\u7248\u672c\u4e2d\u7684MQTT\u89e3\u6790\u4ee3\u7801\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u5145\u5206\u9a8c\u8bc1length\u5b57\u6bb5\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u53ef\u80fd\u6267\u884c\u4ee3\u7801\u3002",
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  "number": "CNVD-2020-35966",
  "openTime": "2020-07-02",
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  "products": {
    "product": "Zephyr Zephyr \u003e=2.2.0"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-10071",
  "serverity": "\u9ad8",
  "submitTime": "2020-06-08",
  "title": "Zephyr\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2020-35966\uff09"
}

CVE-2020-10071 (GCVE-0-2020-10071)

Vulnerability from cvelistv5 – Published: 2020-06-05 17:37 – Updated: 2024-09-17 04:19

Title

Insufficient publish message length validation in MQTT

Summary

The Zephyr MQTT parsing code performs insufficient checking of the length field on publish messages, allowing a buffer overflow and potentially remote code execution. NCC-ZEP-031 This issue affects: zephyrproject-rtos zephyr version 2.2.0 and later versions.

Severity

9 (Critical)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

CWE

CWE-120 - Buffer Overflow
CWE-129 - Improper Validation of Array Index

Assigner

zephyr mitre root

References

4 references

URL	Tags
https://research.nccgroup.com/2020/05/26/research…	x_refsource_MISC
https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-86	x_refsource_MISC
https://docs.zephyrproject.org/latest/security/vu…	x_refsource_MISC
https://github.com/zephyrproject-rtos/zephyr/pull…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
zephyrproject-rtos	zephyr	Affected: 2.2.0 , < unspecified (custom)

Date Public

2020-05-25 00:00

Credits

NCC Group for report

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.

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.