Vulnerability-Lookup

CNVD-2021-27368

Vulnerability from cnvd - Published: 2021-04-12

Title

SerenityOS缓冲区溢出漏洞（CNVD-2021-27368）

Description

SerenityOS是一款图形化的类Unix操作系统，主要适用于x86计算机。 SerenityOS中的/Userland/Libraries/LibCrypto/ASN1/DER.h存在缓冲区溢出漏洞。攻击者可通过解析RSA密钥ASN.1利用该漏洞获取敏感信息。

Severity

中

Patch Name

SerenityOS缓冲区溢出漏洞（CNVD-2021-27368）的补丁

Patch Description

SerenityOS是一款图形化的类Unix操作系统，主要适用于x86计算机。 SerenityOS中的/Userland/Libraries/LibCrypto/ASN1/DER.h存在缓冲区溢出漏洞。攻击者可通过解析RSA密钥ASN.1利用该漏洞获取敏感信息。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/SerenityOS/serenity/commit/48fbf6a88d4822a1e5470cf08f29464511bd72c1

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-27343

Impacted products

Name
SerenityOS SerenityOS

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-27343",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-27343"
    }
  },
  "description": "SerenityOS\u662f\u4e00\u6b3e\u56fe\u5f62\u5316\u7684\u7c7bUnix\u64cd\u4f5c\u7cfb\u7edf\uff0c\u4e3b\u8981\u9002\u7528\u4e8ex86\u8ba1\u7b97\u673a\u3002\n\nSerenityOS\u4e2d\u7684/Userland/Libraries/LibCrypto/ASN1/DER.h\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u89e3\u6790RSA\u5bc6\u94a5ASN.1\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u654f\u611f\u4fe1\u606f\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1ahttps://github.com/SerenityOS/serenity/commit/48fbf6a88d4822a1e5470cf08f29464511bd72c1",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-27368",
  "openTime": "2021-04-12",
  "patchDescription": "SerenityOS\u662f\u4e00\u6b3e\u56fe\u5f62\u5316\u7684\u7c7bUnix\u64cd\u4f5c\u7cfb\u7edf\uff0c\u4e3b\u8981\u9002\u7528\u4e8ex86\u8ba1\u7b97\u673a\u3002\r\n\r\nSerenityOS\u4e2d\u7684/Userland/Libraries/LibCrypto/ASN1/DER.h\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u89e3\u6790RSA\u5bc6\u94a5ASN.1\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u654f\u611f\u4fe1\u606f\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": "SerenityOS\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2021-27368\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "SerenityOS SerenityOS"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-27343",
  "serverity": "\u4e2d",
  "submitTime": "2021-04-07",
  "title": "SerenityOS\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2021-27368\uff09"
}

CVE-2021-27343 (GCVE-0-2021-27343)

Vulnerability from cvelistv5 – Published: 2021-04-06 12:07 – Updated: 2024-08-03 20:48

Summary

SerenityOS Unspecified is affected by: Buffer Overflow. The impact is: obtain sensitive information (context-dependent). The component is: /Userland/Libraries/LibCrypto/ASN1/DER.h Crypto::der_decode_sequence() function. The attack vector is: Parsing RSA Key ASN.1.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

3 references

URL	Tags
https://github.com/SerenityOS/serenity/issues/5317	x_refsource_MISC
https://github.com/SerenityOS/serenity/pull/5344	x_refsource_MISC
https://github.com/SerenityOS/serenity/commit/48f…	x_refsource_MISC

Show details on NVD website

JSON

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          },
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            "url": "https://github.com/SerenityOS/serenity/commit/48fbf6a88d4822a1e5470cf08f29464511bd72c1"
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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.

Action not permitted

CNVD-2021-27368

CVE-2021-27343 (GCVE-0-2021-27343)

Tags

Sightings

Nomenclature

Related by attack behaviour