Vulnerability-Lookup

CNVD-2018-06878

Vulnerability from cnvd - Published: 2018-04-02

Title

LibreSSL信息泄露漏洞

Description

LibreSSL是OpenBSD项目开发的一个OpenSSL加密软件库的分支，也是安全套接层（SSL）和传输层安全（TLS）协议的开源实现。 LibreSSL 2.7.1之前的2.7.0版本中的lib/libcrypto/x509/x509_vpm.c文件的‘int_x509_param_set_hosts’函数存在安全漏洞，该漏洞源于程序不支持长度为零的名称。攻击者可借助特制的证书利用该漏洞冒充服务器并获取敏感信息。

Severity

中

Patch Name

LibreSSL信息泄露漏洞的补丁

Patch Description

Formal description

厂商已发布漏洞修复程序，请及时关注更新： https://github.com/libressl-portable/openbsd/commit/0654414afcce51a16d35d05060190a3ec4618d42

Reference

https://nvd.nist.gov/vuln/detail/CVE-2018-8970

Impacted products

Name
LibreSSL LibreSSL 2.7.0，<2.7.1

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-8970"
    }
  },
  "description": "LibreSSL\u662fOpenBSD\u9879\u76ee\u5f00\u53d1\u7684\u4e00\u4e2aOpenSSL\u52a0\u5bc6\u8f6f\u4ef6\u5e93\u7684\u5206\u652f\uff0c\u4e5f\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 2.7.1\u4e4b\u524d\u76842.7.0\u7248\u672c\u4e2d\u7684lib/libcrypto/x509/x509_vpm.c\u6587\u4ef6\u7684\u2018int_x509_param_set_hosts\u2019\u51fd\u6570\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u4e0d\u652f\u6301\u957f\u5ea6\u4e3a\u96f6\u7684\u540d\u79f0\u3002\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684\u8bc1\u4e66\u5229\u7528\u8be5\u6f0f\u6d1e\u5192\u5145\u670d\u52a1\u5668\u5e76\u83b7\u53d6\u654f\u611f\u4fe1\u606f\u3002",
  "discovererName": "Unknow",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/libressl-portable/openbsd/commit/0654414afcce51a16d35d05060190a3ec4618d42",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-06878",
  "openTime": "2018-04-02",
  "patchDescription": "LibreSSL\u662fOpenBSD\u9879\u76ee\u5f00\u53d1\u7684\u4e00\u4e2aOpenSSL\u52a0\u5bc6\u8f6f\u4ef6\u5e93\u7684\u5206\u652f\uff0c\u4e5f\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 2.7.1\u4e4b\u524d\u76842.7.0\u7248\u672c\u4e2d\u7684lib/libcrypto/x509/x509_vpm.c\u6587\u4ef6\u7684\u2018int_x509_param_set_hosts\u2019\u51fd\u6570\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u4e0d\u652f\u6301\u957f\u5ea6\u4e3a\u96f6\u7684\u540d\u79f0\u3002\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684\u8bc1\u4e66\u5229\u7528\u8be5\u6f0f\u6d1e\u5192\u5145\u670d\u52a1\u5668\u5e76\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": "LibreSSL\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "LibreSSL LibreSSL 2.7.0\uff0c\u003c2.7.1"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2018-8970",
  "serverity": "\u4e2d",
  "submitTime": "2018-03-26",
  "title": "LibreSSL\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e"
}

CVE-2018-8970 (GCVE-0-2018-8970)

Vulnerability from cvelistv5 – Published: 2018-03-24 21:00 – Updated: 2024-08-05 07:10

Summary

The int_x509_param_set_hosts function in lib/libcrypto/x509/x509_vpm.c in LibreSSL 2.7.0 before 2.7.1 does not support a certain special case of a zero name length, which causes silent omission of hostname verification, and consequently allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate. NOTE: the LibreSSL documentation indicates that this special case is supported, but the BoringSSL documentation does not.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

3 references

URL	Tags
https://github.com/libressl-portable/openbsd/comm…	x_refsource_MISC
https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libr…	x_refsource_MISC
https://boringssl.googlesource.com/boringssl/+/e7…	x_refsource_MISC

Date Public

2018-03-24 00:00

Show details on NVD website

JSON

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          },
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            "url": "https://boringssl.googlesource.com/boringssl/+/e759a9cd84198613199259dbed401f4951747cff"
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        }
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      "x_legacyV4Record": {
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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.