Vulnerability-Lookup

CNVD-2015-04413

Vulnerability from cnvd - Published: 2015-07-13

Title

OpenSSH 'x11_open_helper()'函数安全绕过漏洞

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 6.9之前版本中存在安全绕过漏洞，攻击者可利用该漏洞绕过安全限制，执行未授权操作。

Severity

高

Patch Name

OpenSSH 'x11_open_helper()'函数安全绕过漏洞的补丁

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 6.9之前版本中存在安全绕过漏洞，攻击者可利用该漏洞绕过安全限制，执行未授权操作。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这个安全问题，请到厂商的主页下载： http://www.openssh.com/txt/release-6.9

Reference

http://www.securityfocus.com/bid/75525

Impacted products

Name
Openssh OpenSSH <6.9

Show details on source website

JSON

To clipboard

{
  "bids": {
    "bid": {
      "bidNumber": "75525"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2015-5352"
    }
  },
  "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 6.9\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u7ed5\u8fc7\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7\u5b89\u5168\u9650\u5236\uff0c\u6267\u884c\u672a\u6388\u6743\u64cd\u4f5c\u3002",
  "discovererName": "OpenSSH",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u8fd9\u4e2a\u5b89\u5168\u95ee\u9898\uff0c\u8bf7\u5230\u5382\u5546\u7684\u4e3b\u9875\u4e0b\u8f7d\uff1a\r\nhttp://www.openssh.com/txt/release-6.9",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2015-04413",
  "openTime": "2015-07-13",
  "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 6.9\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u7ed5\u8fc7\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7\u5b89\u5168\u9650\u5236\uff0c\u6267\u884c\u672a\u6388\u6743\u64cd\u4f5c\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 \u0027x11_open_helper()\u0027\u51fd\u6570\u5b89\u5168\u7ed5\u8fc7\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Openssh OpenSSH  \u003c6.9"
  },
  "referenceLink": "http://www.securityfocus.com/bid/75525",
  "serverity": "\u9ad8",
  "submitTime": "2015-07-10",
  "title": "OpenSSH \u0027x11_open_helper()\u0027\u51fd\u6570\u5b89\u5168\u7ed5\u8fc7\u6f0f\u6d1e"
}

CVE-2015-5352 (GCVE-0-2015-5352)

Vulnerability from cvelistv5 – Published: 2015-08-03 00:00 – Updated: 2024-08-06 06:41

Summary

The x11_open_helper function in channels.c in ssh in OpenSSH before 6.9, when ForwardX11Trusted mode is not used, lacks a check of the refusal deadline for X connections, which makes it easier for remote attackers to bypass intended access restrictions via a connection outside of the permitted time window.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

15 references

URL	Tags
http://www.ubuntu.com/usn/USN-2710-2	vendor-advisory
http://www.oracle.com/technetwork/topics/security…
https://security.netapp.com/advisory/ntap-2018102…
https://security.gentoo.org/glsa/201512-04	vendor-advisory
https://anongit.mindrot.org/openssh.git/commit/?h…
http://openwall.com/lists/oss-security/2015/07/01/10	mailing-list
http://rhn.redhat.com/errata/RHSA-2016-0741.html	vendor-advisory
http://www.securityfocus.com/bid/75525	vdb-entry
http://www.securitytracker.com/id/1032797	vdb-entry
http://www.oracle.com/technetwork/topics/security…
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisory
http://www.openssh.com/txt/release-6.9
https://lists.debian.org/debian-lts-announce/2018…	mailing-list
http://www.ubuntu.com/usn/USN-2710-1	vendor-advisory
https://cert-portal.siemens.com/productcert/pdf/s…

Date Public

2015-06-30 00:00

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2024-08-06T06:41:09.541Z",
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            "name": "USN-2710-2",
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            "url": "http://www.ubuntu.com/usn/USN-2710-2"
          },
          {
            "tags": [
              "x_transferred"
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            "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"
          },
          {
            "tags": [
              "x_transferred"
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            "url": "https://security.netapp.com/advisory/ntap-20181023-0001/"
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            "tags": [
              "x_transferred"
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            "url": "https://anongit.mindrot.org/openssh.git/commit/?h=V_6_9\u0026id=1bf477d3cdf1a864646d59820878783d42357a1d"
          },
          {
            "name": "[oss-security] 20150701 Re: CVE Request: two security issues in openSSH 6.9",
            "tags": [
              "mailing-list",
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            "tags": [
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            "url": "https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html"
          },
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    "cna": {
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          "lang": "en",
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          "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"
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          "name": "[oss-security] 20150701 Re: CVE Request: two security issues in openSSH 6.9",
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            "mailing-list"
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          ],
          "url": "http://www.securityfocus.com/bid/75525"
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        {
          "name": "1032797",
          "tags": [
            "vdb-entry"
          ],
          "url": "http://www.securitytracker.com/id/1032797"
        },
        {
          "url": "http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html"
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        {
          "name": "SUSE-SU-2015:1581",
          "tags": [
            "vendor-advisory"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00017.html"
        },
        {
          "url": "http://www.openssh.com/txt/release-6.9"
        },
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          "tags": [
            "mailing-list"
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        },
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          "tags": [
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    "dateReserved": "2015-07-01T00:00:00.000Z",
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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.