Vulnerability-Lookup

CNVD-2020-14204

Vulnerability from cnvd - Published: 2020-02-25

Title

ARM Mbed OS CoAP library缓冲区溢出漏洞

Description

ARM Mbed OS是英国ARM公司的一套专用于物联网的开源嵌入式操作系统。CoAP library是其中的一个约束应用协议（CoAP）库。 Arm Mbed OS 5.14.0版本中的CoAP library存在缓冲区溢出漏洞。该漏洞源于网络系统或产品在内存上执行操作时，未正确验证数据边界，导致向关联的其他内存位置上执行了错误的读写操作。攻击者可利用该漏洞导致缓冲区溢出或堆溢出等。

Severity

高

Patch Name

ARM Mbed OS CoAP library缓冲区溢出漏洞的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，详情请关注厂商主页： https://github.com/ARMmbed/mbed-os

Reference

https://github.com/ARMmbed/mbed-os

Impacted products

Name
ARM ARM Mbed OS 5.14.0

Show details on source website

JSON

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    "cve": {
      "cveNumber": "CVE-2019-17212",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2019-17212"
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  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-14204",
  "openTime": "2020-02-25",
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  "patchName": "ARM Mbed OS CoAP library\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
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  "referenceLink": "https://github.com/ARMmbed/mbed-os",
  "serverity": "\u9ad8",
  "submitTime": "2019-11-12",
  "title": "ARM Mbed OS CoAP library\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2019-17212 (GCVE-0-2019-17212)

Vulnerability from cvelistv5 – Published: 2019-11-05 14:53 – Updated: 2024-08-05 01:33

Summary

Buffer overflows were discovered in the CoAP library in Arm Mbed OS 5.14.0. The CoAP parser is responsible for parsing received CoAP packets. The function sn_coap_parser_options_parse() parses CoAP input linearly using a while loop. Once an option is parsed in a loop, the current point (*packet_data_pptr) is increased correspondingly. The pointer is restricted by the size of the received buffer, as well as by the 0xFF delimiter byte. Inside each while loop, the check of the value of *packet_data_pptr is not strictly enforced. More specifically, inside a loop, *packet_data_pptr could be increased and then dereferenced without checking. Moreover, there are many other functions in the format of sn_coap_parser_****() that do not check whether the pointer is within the bounds of the allocated buffer. All of these lead to heap-based or stack-based buffer overflows, depending on how the CoAP packet buffer is allocated.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 29/100 over 2337 records in the last 180 days details

References

7 references

URL	Tags
https://github.com/ARMmbed/mbed-os/blob/d91ed5fa4…	x_refsource_MISC
https://github.com/ARMmbed/mbed-os/blob/d91ed5fa4…	x_refsource_MISC
https://github.com/ARMmbed/mbed-os/blob/d91ed5fa4…	x_refsource_MISC
https://github.com/ARMmbed/mbed-os/blob/d91ed5fa4…	x_refsource_MISC
https://github.com/ARMmbed/mbed-os/blob/d91ed5fa4…	x_refsource_MISC
https://github.com/ARMmbed/mbed-os/blob/d91ed5fa4…	x_refsource_MISC
https://github.com/ARMmbed/mbed-os/issues/11803	x_refsource_MISC

Date Public

2019-11-03 00:00

Show details on NVD website

JSON

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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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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.

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