cnvd - cnvd-2015-02862

cnvd-2015-02862

Vulnerability from cnvd

Title: libssh 'ssh_packet_kexdh_init()'拒绝服务漏洞

Description:

libssh是一个C函数库，用来实现SSH2协议。

libssh 0.6.5之前版本，处理SSH_MSG_NEWKEYS及SSH_MSG_KEXDH_REPLY数据包时，"ssh_packet_kexdh_init()"函数(src/server.c)出现错误，攻击者可以利用漏洞导致拒绝服务。

Severity: 中

Patch Name: libssh 'ssh_packet_kexdh_init()'拒绝服务漏洞的补丁

Patch Description:

libssh是一个C函数库，用来实现SSH2协议。

libssh 0.6.5之前版本，处理SSH_MSG_NEWKEYS及SSH_MSG_KEXDH_REPLY数据包时，"ssh_packet_kexdh_init()"函数(src/server.c)出现错误，攻击者可以利用漏洞导致拒绝服务。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:

用户可参考如下供应商提供的安全公告获得补丁信息： https://www.libssh.org/2015/04/30/libssh-0-6-5-security-and-bugfix-release/

Reference: https://www.libssh.org/2015/04/30/libssh-0-6-5-security-and-bugfix-release/

Impacted products

Name
libssh libssh < 0.6.5

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2015-3146"
    }
  },
  "description": "libssh\u662f\u4e00\u4e2aC\u51fd\u6570\u5e93\uff0c\u7528\u6765\u5b9e\u73b0SSH2\u534f\u8bae\u3002\r\n\r\nlibssh 0.6.5\u4e4b\u524d\u7248\u672c\uff0c\u5904\u7406SSH_MSG_NEWKEYS\u53caSSH_MSG_KEXDH_REPLY\u6570\u636e\u5305\u65f6\uff0c\"ssh_packet_kexdh_init()\"\u51fd\u6570(src/server.c)\u51fa\u73b0\u9519\u8bef\uff0c\u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "discovererName": "Mariusz Ziulek",
  "formalWay": "\u7528\u6237\u53ef\u53c2\u8003\u5982\u4e0b\u4f9b\u5e94\u5546\u63d0\u4f9b\u7684\u5b89\u5168\u516c\u544a\u83b7\u5f97\u8865\u4e01\u4fe1\u606f\uff1a\r\nhttps://www.libssh.org/2015/04/30/libssh-0-6-5-security-and-bugfix-release/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2015-02862",
  "openTime": "2015-05-05",
  "patchDescription": "libssh\u662f\u4e00\u4e2aC\u51fd\u6570\u5e93\uff0c\u7528\u6765\u5b9e\u73b0SSH2\u534f\u8bae\u3002 \r\n\r\nlibssh 0.6.5\u4e4b\u524d\u7248\u672c\uff0c\u5904\u7406SSH_MSG_NEWKEYS\u53caSSH_MSG_KEXDH_REPLY\u6570\u636e\u5305\u65f6\uff0c\"ssh_packet_kexdh_init()\"\u51fd\u6570(src/server.c)\u51fa\u73b0\u9519\u8bef\uff0c\u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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": "libssh \u0027ssh_packet_kexdh_init()\u0027\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "libssh libssh \u003c 0.6.5"
  },
  "referenceLink": "https://www.libssh.org/2015/04/30/libssh-0-6-5-security-and-bugfix-release/",
  "serverity": "\u4e2d",
  "submitTime": "2015-05-04",
  "title": "libssh \u0027ssh_packet_kexdh_init()\u0027\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2015-3146 (GCVE-0-2015-3146)

Vulnerability from cvelistv5

Published

2016-04-13 17:00

Modified

2024-08-06 05:39

Severity ?

CWE

Summary

The (1) SSH_MSG_NEWKEYS and (2) SSH_MSG_KEXDH_REPLY packet handlers in package_cb.c in libssh before 0.6.5 do not properly validate state, which allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a crafted SSH packet.

References

▼	URL	Tags
	http://www.ubuntu.com/usn/USN-2912-1	vendor-advisory, x_refsource_UBUNTU
	http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161802.html	vendor-advisory, x_refsource_FEDORA
	https://www.libssh.org/security/advisories/CVE-2015-3146.txt	x_refsource_CONFIRM
	http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158013.html	vendor-advisory, x_refsource_FEDORA
	https://www.libssh.org/2015/04/30/libssh-0-6-5-security-and-bugfix-release/	x_refsource_CONFIRM
	http://www.debian.org/security/2016/dsa-3488	vendor-advisory, x_refsource_DEBIAN
	https://git.libssh.org/projects/libssh.git/commit/?h=libssh-0.6.5&id=94f6955fbaee6fda9385a23e505497efe21f5b4f	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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