Vulnerability-Lookup

CNVD-2021-56812

Vulnerability from cnvd - Published: 2021-07-30

Title

Realtek RTL8710缓冲区溢出漏洞

Description

Realtek RTL8710是中国台湾瑞昱半导体（Realtek）公司的一款物联网微控制器。 Realtek RTL8710存在缓冲区溢出漏洞，攻击者可利用该漏洞发送一个手工的“Encrypted GTK”值作为WPA2 4路握手的一部分进行攻击。

Severity

高

Patch Name

Realtek RTL8710缓冲区溢出漏洞的补丁

Patch Description

Realtek RTL8710是中国台湾瑞昱半导体（Realtek）公司的一款物联网微控制器。 Realtek RTL8710存在缓冲区溢出漏洞，攻击者可利用该漏洞发送一个手工的“Encrypted GTK”值作为WPA2 4路握手的一部分进行攻击。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://github.com/ambiot/ambz2_sdk/tree/master/project/realtek_amebaz2_v0_example/GCC-RELEASE

Reference

https://www.cybersecurity-help.cz/vdb/SB2021060501

Impacted products

Name
Realtek Realtek RTL8710

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-27301",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-27301"
    }
  },
  "description": "Realtek RTL8710\u662f\u4e2d\u56fd\u53f0\u6e7e\u745e\u6631\u534a\u5bfc\u4f53\uff08Realtek\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u7269\u8054\u7f51\u5fae\u63a7\u5236\u5668\u3002\n\nRealtek RTL8710\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u53d1\u9001\u4e00\u4e2a\u624b\u5de5\u7684\u201cEncrypted GTK\u201d\u503c\u4f5c\u4e3aWPA2 4\u8def\u63e1\u624b\u7684\u4e00\u90e8\u5206\u8fdb\u884c\u653b\u51fb\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/ambiot/ambz2_sdk/tree/master/project/realtek_amebaz2_v0_example/GCC-RELEASE",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-56812",
  "openTime": "2021-07-30",
  "patchDescription": "Realtek RTL8710\u662f\u4e2d\u56fd\u53f0\u6e7e\u745e\u6631\u534a\u5bfc\u4f53\uff08Realtek\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u7269\u8054\u7f51\u5fae\u63a7\u5236\u5668\u3002\r\n\r\nRealtek RTL8710\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u53d1\u9001\u4e00\u4e2a\u624b\u5de5\u7684\u201cEncrypted GTK\u201d\u503c\u4f5c\u4e3aWPA2 4\u8def\u63e1\u624b\u7684\u4e00\u90e8\u5206\u8fdb\u884c\u653b\u51fb\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": "Realtek RTL8710\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Realtek Realtek RTL8710"
  },
  "referenceLink": "https://www.cybersecurity-help.cz/vdb/SB2021060501",
  "serverity": "\u9ad8",
  "submitTime": "2021-06-07",
  "title": "Realtek RTL8710\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2020-27301 (GCVE-0-2020-27301)

Vulnerability from cvelistv5 – Published: 2021-06-04 12:24 – Updated: 2024-08-04 16:11

Summary

A stack buffer overflow in Realtek RTL8710 (and other Ameba-based devices) can lead to remote code execution via the "AES_UnWRAP" function, when an attacker in Wi-Fi range sends a crafted "Encrypted GTK" value as part of the WPA2 4-way-handshake.

Severity

No CVSS data available.

CWE

Assigner

VDOO Scorecard

References

1 reference

URL	Tags
https://www.vdoo.com/blog/realtek-wifi-vulnerabil…	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2024-08-04T16:11:36.577Z",
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            "url": "https://www.vdoo.com/blog/realtek-wifi-vulnerabilities-zero-day"
          }
        ],
        "title": "CVE Program Container"
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        }
      ],
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          "url": "https://www.vdoo.com/blog/realtek-wifi-vulnerabilities-zero-day"
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          "ID": "CVE-2020-27301",
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  "cveMetadata": {
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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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.

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.
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CNVD-2021-56812

CVE-2020-27301 (GCVE-0-2020-27301)

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