Vulnerability-Lookup

CNVD-2015-05759

Vulnerability from cnvd - Published: 2015-09-01

Title

OpenSSH sshd拒绝服务漏洞

Description

OpenSSH（OpenBSD Secure Shell）是OpenBSD计划组所维护的一套用于安全访问远程计算机的连接工具。该工具是SSH协议的开源实现，支持对所有的传输进行加密，可有效阻止窃听、连接劫持以及其他网络级的攻击。 OpenSSH 6.8版本和6.9版本的sshd中存在安全漏洞，该漏洞源于程序为TTY设备分配全局可写权限。本地攻击者可通过写入设备利用该漏洞造成拒绝服务（终端中断）。

Severity

高

Patch Name

OpenSSH sshd拒绝服务漏洞的补丁

Patch Description

OpenSSH（OpenBSD Secure Shell）是OpenBSD计划组所维护的一套用于安全访问远程计算机的连接工具。该工具是SSH协议的开源实现，支持对所有的传输进行加密，可有效阻止窃听、连接劫持以及其他网络级的攻击。OpenSSH 6.8版本和6.9版本的sshd中存在安全漏洞，该漏洞源于程序为TTY设备分配全局可写权限。本地攻击者可通过写入设备利用该漏洞造成拒绝服务（终端中断）。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

目前厂商已经发布了升级补丁以修复此安全问题，补丁获取链接： http://www.openssh.com/txt/release-7.0

Reference

http://www.openwall.com/lists/oss-security/2015/08/22/1

Impacted products

Name
['Openssh OpenSSH 6.8', 'Openssh OpenSSH 6.9']

Show details on source website

JSON

To clipboard

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    "cve": {
      "cveNumber": "CVE-2015-6565"
    }
  },
  "description": "OpenSSH\uff08OpenBSD Secure Shell\uff09\u662fOpenBSD\u8ba1\u5212\u7ec4\u6240\u7ef4\u62a4\u7684\u4e00\u5957\u7528\u4e8e\u5b89\u5168\u8bbf\u95ee\u8fdc\u7a0b\u8ba1\u7b97\u673a\u7684\u8fde\u63a5\u5de5\u5177\u3002\u8be5\u5de5\u5177\u662fSSH\u534f\u8bae\u7684\u5f00\u6e90\u5b9e\u73b0\uff0c\u652f\u6301\u5bf9\u6240\u6709\u7684\u4f20\u8f93\u8fdb\u884c\u52a0\u5bc6\uff0c\u53ef\u6709\u6548\u963b\u6b62\u7a83\u542c\u3001\u8fde\u63a5\u52ab\u6301\u4ee5\u53ca\u5176\u4ed6\u7f51\u7edc\u7ea7\u7684\u653b\u51fb\u3002\r\n\r\nOpenSSH 6.8\u7248\u672c\u548c6.9\u7248\u672c\u7684sshd\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u4e3aTTY\u8bbe\u5907\u5206\u914d\u5168\u5c40\u53ef\u5199\u6743\u9650\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5199\u5165\u8bbe\u5907\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u7ec8\u7aef\u4e2d\u65ad\uff09\u3002",
  "discovererName": "unknown",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6b64\u5b89\u5168\u95ee\u9898\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttp://www.openssh.com/txt/release-7.0",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2015-05759",
  "openTime": "2015-09-01",
  "patchDescription": "OpenSSH\uff08OpenBSD Secure Shell\uff09\u662fOpenBSD\u8ba1\u5212\u7ec4\u6240\u7ef4\u62a4\u7684\u4e00\u5957\u7528\u4e8e\u5b89\u5168\u8bbf\u95ee\u8fdc\u7a0b\u8ba1\u7b97\u673a\u7684\u8fde\u63a5\u5de5\u5177\u3002\u8be5\u5de5\u5177\u662fSSH\u534f\u8bae\u7684\u5f00\u6e90\u5b9e\u73b0\uff0c\u652f\u6301\u5bf9\u6240\u6709\u7684\u4f20\u8f93\u8fdb\u884c\u52a0\u5bc6\uff0c\u53ef\u6709\u6548\u963b\u6b62\u7a83\u542c\u3001\u8fde\u63a5\u52ab\u6301\u4ee5\u53ca\u5176\u4ed6\u7f51\u7edc\u7ea7\u7684\u653b\u51fb\u3002OpenSSH 6.8\u7248\u672c\u548c6.9\u7248\u672c\u7684sshd\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u4e3aTTY\u8bbe\u5907\u5206\u914d\u5168\u5c40\u53ef\u5199\u6743\u9650\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5199\u5165\u8bbe\u5907\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u7ec8\u7aef\u4e2d\u65ad\uff09\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": "OpenSSH sshd\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Openssh OpenSSH  6.8",
      "Openssh OpenSSH  6.9"
    ]
  },
  "referenceLink": "http://www.openwall.com/lists/oss-security/2015/08/22/1",
  "serverity": "\u9ad8",
  "submitTime": "2015-08-25",
  "title": "OpenSSH sshd\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2015-6565 (GCVE-0-2015-6565)

Vulnerability from cvelistv5 – Published: 2015-08-24 00:00 – Updated: 2024-08-06 07:22

Summary

sshd in OpenSSH 6.8 and 6.9 uses world-writable permissions for TTY devices, which allows local users to cause a denial of service (terminal disruption) or possibly have unspecified other impact by writing to a device, as demonstrated by writing an escape sequence.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

11 references

URL	Tags
http://www.openwall.com/lists/oss-security/2015/08/22/1	mailing-list
https://h20566.www2.hpe.com/portal/site/hpsc/publ…
https://security.gentoo.org/glsa/201512-04	vendor-advisory
http://www.securitytracker.com/id/1033917	vdb-entry
https://h20566.www2.hpe.com/portal/site/hpsc/publ…
http://www.openssh.com/txt/release-7.0
https://h20566.www2.hpe.com/portal/site/hpsc/publ…
https://www.exploit-db.com/exploits/41173/	exploit
http://openwall.com/lists/oss-security/2017/01/26/2	mailing-list
http://www.securityfocus.com/bid/76497	vdb-entry
https://cert-portal.siemens.com/productcert/pdf/s…

Date Public

2015-08-01 00:00

Show details on NVD website

JSON

To clipboard

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          "tags": [
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          "url": "https://security.gentoo.org/glsa/201512-04"
        },
        {
          "name": "1033917",
          "tags": [
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          ],
          "url": "http://www.securitytracker.com/id/1033917"
        },
        {
          "url": "https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05150888"
        },
        {
          "url": "http://www.openssh.com/txt/release-7.0"
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    "dateReserved": "2015-08-21T00:00:00.000Z",
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    "state": "PUBLISHED"
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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.