Vulnerability-Lookup

CNVD-2021-99284

Vulnerability from cnvd - Published: 2021-12-13

Title

LibreSSL栈缓冲区溢出漏洞

Description

LibreSSL是安全套接层（SSL）和传输层安全（TLS）协议的开源实现。 LibreSSL 3.4.0及更早版本中的lib/libcrypto/x509/x509_constraints.c中的x509_constraints_parse_mailbox存在栈缓冲区溢出漏洞。目前没有详细的漏洞细节提供。

Severity

中

Patch Name

LibreSSL栈缓冲区溢出漏洞的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/openbsd/src/commit/62ceddea5b1d64a1a362bbb7071d9e15adcde6b1

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-41581

Impacted products

Name
LibreSSL LibreSSL <=3.4.0

Show details on source website

JSON

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  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-41581",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-41581"
    }
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  "description": "LibreSSL\u662f\u5b89\u5168\u5957\u63a5\u5c42\uff08SSL\uff09\u548c\u4f20\u8f93\u5c42\u5b89\u5168\uff08TLS\uff09\u534f\u8bae\u7684\u5f00\u6e90\u5b9e\u73b0\u3002\n\nLibreSSL 3.4.0\u53ca\u66f4\u65e9\u7248\u672c\u4e2d\u7684lib/libcrypto/x509/x509_constraints.c\u4e2d\u7684x509_constraints_parse_mailbox\u5b58\u5728\u6808\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\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\nhttps://github.com/openbsd/src/commit/62ceddea5b1d64a1a362bbb7071d9e15adcde6b1",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-99284",
  "openTime": "2021-12-13",
  "patchDescription": "LibreSSL\u662f\u5b89\u5168\u5957\u63a5\u5c42\uff08SSL\uff09\u548c\u4f20\u8f93\u5c42\u5b89\u5168\uff08TLS\uff09\u534f\u8bae\u7684\u5f00\u6e90\u5b9e\u73b0\u3002\r\n\r\nLibreSSL 3.4.0\u53ca\u66f4\u65e9\u7248\u672c\u4e2d\u7684lib/libcrypto/x509/x509_constraints.c\u4e2d\u7684x509_constraints_parse_mailbox\u5b58\u5728\u6808\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\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": "LibreSSL\u6808\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "LibreSSL LibreSSL \u003c=3.4.0"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-41581",
  "serverity": "\u4e2d",
  "submitTime": "2021-09-26",
  "title": "LibreSSL\u6808\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2021-41581 (GCVE-0-2021-41581)

Vulnerability from cvelistv5 – Published: 2021-09-24 02:12 – Updated: 2024-08-04 03:15

Summary

x509_constraints_parse_mailbox in lib/libcrypto/x509/x509_constraints.c in LibreSSL through 3.4.0 has a stack-based buffer over-read. When the input exceeds DOMAIN_PART_MAX_LEN, the buffer lacks '\0' termination.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/libressl-portable/openbsd/issues/126	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2024-08-04T03:15:29.047Z",
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            ],
            "url": "https://github.com/libressl-portable/openbsd/issues/126"
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        }
      ],
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        "dateUpdated": "2021-09-24T02:12:33.000Z",
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          "tags": [
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          "url": "https://github.com/libressl-portable/openbsd/issues/126"
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  "cveMetadata": {
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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.