Vulnerability-Lookup

CNVD-2021-36205

Vulnerability from cnvd - Published: 2021-05-21

Title

uClibc-ng输入验证错误漏洞

Description

uclibc-ng是一个应用系统。用于Linux的小型C库。 uClibc-ng 1.0.37 之前版本存在输入验证错误漏洞，该漏洞源于容易受到malloc-simple函数的整数包围。这种不正确的内存分配可能导致任意的内存分配，从而导致意外的行为，如崩溃或远程代码注入执行。目前没有详细的漏洞细节提供。

Severity

高

Patch Name

uClibc-ng输入验证错误漏洞的补丁

Patch Description

uclibc-ng是一个应用系统。用于Linux的小型C库。 uClibc-ng 1.0.37 之前版本存在输入验证错误漏洞，该漏洞源于容易受到malloc-simple函数的整数包围。这种不正确的内存分配可能导致任意的内存分配，从而导致意外的行为，如崩溃或远程代码注入执行。目前没有详细的漏洞细节提供。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

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://us-cert.cisa.gov/ics/advisories/icsa-21-119-04

Reference

https://www.auscert.org.au/bulletins/ESB-2021.1489

Impacted products

Name
Uclibc-ng Uclibc-ng <1.0.37

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-27419"
    }
  },
  "description": "uclibc-ng\u662f\u4e00\u4e2a\u5e94\u7528\u7cfb\u7edf\u3002\u7528\u4e8eLinux\u7684\u5c0f\u578bC\u5e93\u3002\n\nuClibc-ng 1.0.37 \u4e4b\u524d\u7248\u672c\u5b58\u5728\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5bb9\u6613\u53d7\u5230malloc-simple\u51fd\u6570\u7684\u6574\u6570\u5305\u56f4\u3002\u8fd9\u79cd\u4e0d\u6b63\u786e\u7684\u5185\u5b58\u5206\u914d\u53ef\u80fd\u5bfc\u81f4\u4efb\u610f\u7684\u5185\u5b58\u5206\u914d\uff0c\u4ece\u800c\u5bfc\u81f4\u610f\u5916\u7684\u884c\u4e3a\uff0c\u5982\u5d29\u6e83\u6216\u8fdc\u7a0b\u4ee3\u7801\u6ce8\u5165\u6267\u884c\u3002 \u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
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  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-36205",
  "openTime": "2021-05-21",
  "patchDescription": "uclibc-ng\u662f\u4e00\u4e2a\u5e94\u7528\u7cfb\u7edf\u3002\u7528\u4e8eLinux\u7684\u5c0f\u578bC\u5e93\u3002\r\n\r\nuClibc-ng 1.0.37 \u4e4b\u524d\u7248\u672c\u5b58\u5728\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5bb9\u6613\u53d7\u5230malloc-simple\u51fd\u6570\u7684\u6574\u6570\u5305\u56f4\u3002\u8fd9\u79cd\u4e0d\u6b63\u786e\u7684\u5185\u5b58\u5206\u914d\u53ef\u80fd\u5bfc\u81f4\u4efb\u610f\u7684\u5185\u5b58\u5206\u914d\uff0c\u4ece\u800c\u5bfc\u81f4\u610f\u5916\u7684\u884c\u4e3a\uff0c\u5982\u5d29\u6e83\u6216\u8fdc\u7a0b\u4ee3\u7801\u6ce8\u5165\u6267\u884c\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\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": "uClibc-ng\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Uclibc-ng Uclibc-ng \u003c1.0.37"
  },
  "referenceLink": "https://www.auscert.org.au/bulletins/ESB-2021.1489",
  "serverity": "\u9ad8",
  "submitTime": "2021-04-30",
  "title": "uClibc-ng\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e"
}

CVE-2021-27419 (GCVE-0-2021-27419)

Vulnerability from cvelistv5 – Published: 2022-05-03 20:20 – Updated: 2025-04-16 16:25

Title

uClibc-ng Integer Overflow or Wraparound

Summary

uClibc-ng versions prior to 1.0.37 are vulnerable to integer wrap-around in functions malloc-simple. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.

Severity

7.3 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-16 15:57 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

icscert icscert root

References

2 references

URL	Tags
https://www.cisa.gov/uscert/ics/advisories/icsa-2…	x_refsource_CONFIRM
https://downloads.uclibc-ng.org/releases/	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
uClibc-ng	uClibc-ng	Affected: unspecified , < 1.0.37 (custom)

Credits

David Atch, Omri Ben Bassat, and Tamir Ariel from Microsoft Section 52, and the Azure Defender for IoT research group reported these vulnerabilities to CISA.

Show details on NVD website

JSON

To clipboard

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                "timestamp": "2025-04-16T15:57:27.883877Z",
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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.

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.

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CNVD-2021-36205

CVE-2021-27419 (GCVE-0-2021-27419)

Tags

Sightings

Nomenclature

Related by attack behaviour