Vulnerability-Lookup

CNVD-2021-95620

Vulnerability from cnvd - Published: 2021-12-09

Title

Zephyr存在未明漏洞（CNVD-2021-95620）

Description

Zephyr是一套开源的小型的可缩放的实时操作系统。 Zephyr存在安全漏洞，该漏洞源于截断的L2CAP K帧导致断言失败。目前没有详细漏洞细节提供。

Severity

中

Patch Name

Zephyr存在未明漏洞（CNVD-2021-95620）的补丁

Patch Description

Zephyr是一套开源的小型的可缩放的实时操作系统。 Zephyr存在安全漏洞，该漏洞源于截断的L2CAP K帧导致断言失败。目前没有详细漏洞细节提供。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： http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-fx88-6c29-vrp3

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-3454

Impacted products

Name
['Zephyr Zephyr >=2.4.0', 'Zephyr Zephyr >=2.5.0']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-3454"
    }
  },
  "description": "Zephyr\u662f\u4e00\u5957\u5f00\u6e90\u7684\u5c0f\u578b\u7684\u53ef\u7f29\u653e\u7684\u5b9e\u65f6\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nZephyr\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u622a\u65ad\u7684L2CAP K\u5e27\u5bfc\u81f4\u65ad\u8a00\u5931\u8d25\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttp://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-fx88-6c29-vrp3",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-95620",
  "openTime": "2021-12-09",
  "patchDescription": "Zephyr\u662f\u4e00\u5957\u5f00\u6e90\u7684\u5c0f\u578b\u7684\u53ef\u7f29\u653e\u7684\u5b9e\u65f6\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nZephyr\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u622a\u65ad\u7684L2CAP K\u5e27\u5bfc\u81f4\u65ad\u8a00\u5931\u8d25\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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": "Zephyr\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2021-95620\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Zephyr Zephyr \u003e=2.4.0",
      "Zephyr Zephyr \u003e=2.5.0"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-3454",
  "serverity": "\u4e2d",
  "submitTime": "2021-10-21",
  "title": "Zephyr\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2021-95620\uff09"
}

CVE-2021-3454 (GCVE-0-2021-3454)

Vulnerability from cvelistv5 – Published: 2021-10-19 22:50 – Updated: 2024-09-17 00:01

Title

Truncated L2CAP K-frame causes assertion failure

Summary

Truncated L2CAP K-frame causes assertion failure. Zephyr versions >= 2.4.0, >= v.2.50 contain Improper Handling of Length Parameter Inconsistency (CWE-130), Reachable Assertion (CWE-617). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-fx88-6c29-vrp3

Severity

4.3 (Medium)


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

CWE

CWE-130 - Improper Handling of Length Parameter Inconsistency (CWE-130)
CWE-617 - Reachable Assertion (CWE-617)

Assigner

zephyr mitre root

References

1 reference

URL	Tags
http://github.com/zephyrproject-rtos/zephyr/secur…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
zephyrproject-rtos	zephyr	Affected: 2.4.0 , < unspecified (custom) Affected: v.2.50 , < unspecified (custom)

Date Public

2021-05-24 00:00

Show details on NVD website

JSON

To clipboard

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            "url": "http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-fx88-6c29-vrp3"
          }
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        "title": "CVE Program Container"
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            },
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      },
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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.