Vulnerability-Lookup

CNVD-2015-05761

Vulnerability from cnvd - Published: 2015-09-01

Title

OpenSSH sshd monitor组件输入验证漏洞

Description

OpenSSH（OpenBSD Secure Shell）on non-OpenBSD platforms是OpenBSD计划组所维护的一套运行于非OpenBSD（基于BSD的UNIX实现）平台且用于安全访问远程计算机的连接工具。基于non-OpenBSD平台的OpenSSH 6.9及之前版本的sshd中的monitor组件中存在安全漏洞，该漏洞源于程序错误的接收MONITOR_REQ_PAM_INIT_CTX请求中的外部用户名数据。本地攻击者可通过SSH登录访问并控制sshd uid向MONITOR_REQ_PWNAM发送特制的请求，利用该漏洞实施伪造攻击。

Severity

低

Patch Name

OpenSSH sshd monitor组件输入验证漏洞的补丁

Patch Description

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 http://seclists.org/fulldisclosure/2015/Aug/54

Impacted products

Name
Openssh OpenSSH <=6.9

Show details on source website

JSON

To clipboard

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    "cve": {
      "cveNumber": "CVE-2015-6563"
    }
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  "discovererName": "OpenSSH",
  "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-2015-05761",
  "openTime": "2015-09-01",
  "patchDescription": "OpenSSH\uff08OpenBSD Secure Shell\uff09on non-OpenBSD platforms\u662fOpenBSD\u8ba1\u5212\u7ec4\u6240\u7ef4\u62a4\u7684\u4e00\u5957\u8fd0\u884c\u4e8e\u975eOpenBSD\uff08\u57fa\u4e8eBSD\u7684UNIX\u5b9e\u73b0\uff09\u5e73\u53f0\u4e14\u7528\u4e8e\u5b89\u5168\u8bbf\u95ee\u8fdc\u7a0b\u8ba1\u7b97\u673a\u7684\u8fde\u63a5\u5de5\u5177\u3002\u57fa\u4e8enon-OpenBSD\u5e73\u53f0\u7684OpenSSH 6.9\u53ca\u4e4b\u524d\u7248\u672c\u7684sshd\u4e2d\u7684monitor\u7ec4\u4ef6\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u9519\u8bef\u7684\u63a5\u6536MONITOR_REQ_PAM_INIT_CTX\u8bf7\u6c42\u4e2d\u7684\u5916\u90e8\u7528\u6237\u540d\u6570\u636e\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7SSH\u767b\u5f55\u8bbf\u95ee\u5e76\u63a7\u5236sshd uid\u5411MONITOR_REQ_PWNAM\u53d1\u9001\u7279\u5236\u7684\u8bf7\u6c42\uff0c\u5229\u7528\u8be5\u6f0f\u6d1e\u5b9e\u65bd\u4f2a\u9020\u653b\u51fb\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",
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  "serverity": "\u4f4e",
  "submitTime": "2015-08-25",
  "title": "OpenSSH sshd monitor\u7ec4\u4ef6\u8f93\u5165\u9a8c\u8bc1\u6f0f\u6d1e"
}

CVE-2015-6563 (GCVE-0-2015-6563)

Vulnerability from cvelistv5 – Published: 2015-08-24 00:00 – Updated: 2026-05-27 16:11

Summary

The monitor component in sshd in OpenSSH before 7.0 on non-OpenBSD platforms accepts extraneous username data in MONITOR_REQ_PAM_INIT_CTX requests, which allows local users to conduct impersonation attacks by leveraging any SSH login access in conjunction with control of the sshd uid to send a crafted MONITOR_REQ_PWNAM request, related to monitor.c and monitor_wrap.c.

Severity

6.4 (Medium)


                        
                          CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-27 16:11 UTC

CWE

n/a
CWE-20 - Improper Input Validation

Assigner

mitre mitre root

References

18 references

URL	Tags
http://www.openwall.com/lists/oss-security/2015/08/22/1	mailing-list
http://lists.fedoraproject.org/pipermail/package-…	vendor-advisory
http://lists.apple.com/archives/security-announce…	vendor-advisory
https://support.apple.com/HT205375
http://www.securityfocus.com/bid/76317	vdb-entry
https://github.com/openssh/openssh-portable/commi…
http://www.oracle.com/technetwork/topics/security…
https://security.gentoo.org/glsa/201512-04	vendor-advisory
http://www.openssh.com/txt/release-7.0
http://www.oracle.com/technetwork/topics/security…
http://rhn.redhat.com/errata/RHSA-2016-0741.html	vendor-advisory
http://seclists.org/fulldisclosure/2015/Aug/54	mailing-list
http://www.oracle.com/technetwork/topics/security…
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisory
https://lists.debian.org/debian-lts-announce/2018…	mailing-list
https://security.netapp.com/advisory/ntap-2018020…
https://www.broadcom.com/support/fibre-channel-ne…
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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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.