Vulnerability-Lookup

CNVD-2019-37882

Vulnerability from cnvd - Published: 2019-10-29

Title

libssh2输入验证错误漏洞（CNVD-2019-37882）

Description

libssh2是一款实现SSH2协议的客户端C库，它能够执行远程命令、文件传输，同时为远程的程序提供安全的传输通道。 libssh2 1.9.0及之前版本中的packet.c文件的SSH_MSG_DISCONNECT逻辑存在输入验证错误漏洞，攻击者可借助特制的SSH服务器利用该漏洞泄露敏感信息或造成拒绝服务。

Severity

中

Patch Name

libssh2输入验证错误漏洞（CNVD-2019-37882）的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/libssh2/libssh2/pull/402/commits/1c6fa92b77e34d089493fe6d3e2c6c8775858b94

Reference

https://github.com/libssh2/libssh2/pull/402/commits/1c6fa92b77e34d089493fe6d3e2c6c8775858b94 https://blog.semmle.com/libssh2-integer-overflow-CVE-2019-17498/ https://nvd.nist.gov/vuln/detail/CVE-2019-17498

Impacted products

Name
libssh2 libssh2 <=1.9.0

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-17498"
    }
  },
  "description": "libssh2\u662f\u4e00\u6b3e\u5b9e\u73b0SSH2\u534f\u8bae\u7684\u5ba2\u6237\u7aefC\u5e93\uff0c\u5b83\u80fd\u591f\u6267\u884c\u8fdc\u7a0b\u547d\u4ee4\u3001\u6587\u4ef6\u4f20\u8f93\uff0c\u540c\u65f6\u4e3a\u8fdc\u7a0b\u7684\u7a0b\u5e8f\u63d0\u4f9b\u5b89\u5168\u7684\u4f20\u8f93\u901a\u9053\u3002\n\nlibssh2 1.9.0\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u7684packet.c\u6587\u4ef6\u7684SSH_MSG_DISCONNECT\u903b\u8f91\u5b58\u5728\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684SSH\u670d\u52a1\u5668\u5229\u7528\u8be5\u6f0f\u6d1e\u6cc4\u9732\u654f\u611f\u4fe1\u606f\u6216\u9020\u6210\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/libssh2/libssh2/pull/402/commits/1c6fa92b77e34d089493fe6d3e2c6c8775858b94",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-37882",
  "openTime": "2019-10-29",
  "patchDescription": "libssh2\u662f\u4e00\u6b3e\u5b9e\u73b0SSH2\u534f\u8bae\u7684\u5ba2\u6237\u7aefC\u5e93\uff0c\u5b83\u80fd\u591f\u6267\u884c\u8fdc\u7a0b\u547d\u4ee4\u3001\u6587\u4ef6\u4f20\u8f93\uff0c\u540c\u65f6\u4e3a\u8fdc\u7a0b\u7684\u7a0b\u5e8f\u63d0\u4f9b\u5b89\u5168\u7684\u4f20\u8f93\u901a\u9053\u3002\r\n\r\nlibssh2 1.9.0\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u7684packet.c\u6587\u4ef6\u7684SSH_MSG_DISCONNECT\u903b\u8f91\u5b58\u5728\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684SSH\u670d\u52a1\u5668\u5229\u7528\u8be5\u6f0f\u6d1e\u6cc4\u9732\u654f\u611f\u4fe1\u606f\u6216\u9020\u6210\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": "libssh2\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2019-37882\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "libssh2 libssh2 \u003c=1.9.0"
  },
  "referenceLink": "https://github.com/libssh2/libssh2/pull/402/commits/1c6fa92b77e34d089493fe6d3e2c6c8775858b94\r\nhttps://blog.semmle.com/libssh2-integer-overflow-CVE-2019-17498/\r\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-17498",
  "serverity": "\u4e2d",
  "submitTime": "2019-10-22",
  "title": "libssh2\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2019-37882\uff09"
}

CVE-2019-17498 (GCVE-0-2019-17498)

Vulnerability from cvelistv5 – Published: 2019-10-21 00:00 – Updated: 2024-08-05 01:40

Summary

In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

12 references

URL	Tags
https://github.com/libssh2/libssh2/blob/42d37aa63…
https://blog.semmle.com/libssh2-integer-overflow-…
https://github.com/kevinbackhouse/SecurityExploit…
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisory
https://lists.debian.org/debian-lts-announce/2019…	mailing-list
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://github.com/libssh2/libssh2/commit/dedcbd1…
https://lists.debian.org/debian-lts-announce/2021…	mailing-list
https://security.netapp.com/advisory/ntap-2022090…
http://packetstormsecurity.com/files/172835/libss…
https://lists.debian.org/debian-lts-announce/2023…	mailing-list

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T01:40:15.913Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/libssh2/libssh2/blob/42d37aa63129a1b2644bf6495198923534322d64/src/packet.c#L480"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://blog.semmle.com/libssh2-integer-overflow-CVE-2019-17498/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/kevinbackhouse/SecurityExploits/tree/8cbdbbe6363510f7d9ceec685373da12e6fc752d/libssh2/out_of_bounds_read_disconnect_CVE-2019-17498"
          },
          {
            "name": "FEDORA-2019-91529f19e4",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TY7EEE34RFKCTXTMBQQWWSLXZWSCXNDB/"
          },
          {
            "name": "openSUSE-SU-2019:2483",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00026.html"
          },
          {
            "name": "[debian-lts-announce] 20191113 [SECURITY] [DLA 1991-1] libssh2 security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2019/11/msg00010.html"
          },
          {
            "name": "FEDORA-2019-ec04c34768",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22H4Q5XMGS3QNSA7OCL3U7UQZ4NXMR5O/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/libssh2/libssh2/commit/dedcbd106f8e52d5586b0205bc7677e4c9868f9c"
          },
          {
            "name": "[debian-lts-announce] 20211217 [SECURITY] [DLA 2848-1] libssh2 security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00013.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20220909-0004/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://packetstormsecurity.com/files/172835/libssh2-1.9.0-Out-Of-Bounds-Read.html"
          },
          {
            "name": "[debian-lts-announce] 20230908 [SECURITY] [DLA 3559-1] libssh2 security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00006.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-09-08T13:06:20.499Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/libssh2/libssh2/blob/42d37aa63129a1b2644bf6495198923534322d64/src/packet.c#L480"
        },
        {
          "url": "https://blog.semmle.com/libssh2-integer-overflow-CVE-2019-17498/"
        },
        {
          "url": "https://github.com/kevinbackhouse/SecurityExploits/tree/8cbdbbe6363510f7d9ceec685373da12e6fc752d/libssh2/out_of_bounds_read_disconnect_CVE-2019-17498"
        },
        {
          "name": "FEDORA-2019-91529f19e4",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TY7EEE34RFKCTXTMBQQWWSLXZWSCXNDB/"
        },
        {
          "name": "openSUSE-SU-2019:2483",
          "tags": [
            "vendor-advisory"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00026.html"
        },
        {
          "name": "[debian-lts-announce] 20191113 [SECURITY] [DLA 1991-1] libssh2 security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2019/11/msg00010.html"
        },
        {
          "name": "FEDORA-2019-ec04c34768",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22H4Q5XMGS3QNSA7OCL3U7UQZ4NXMR5O/"
        },
        {
          "url": "https://github.com/libssh2/libssh2/commit/dedcbd106f8e52d5586b0205bc7677e4c9868f9c"
        },
        {
          "name": "[debian-lts-announce] 20211217 [SECURITY] [DLA 2848-1] libssh2 security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00013.html"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20220909-0004/"
        },
        {
          "url": "http://packetstormsecurity.com/files/172835/libssh2-1.9.0-Out-Of-Bounds-Read.html"
        },
        {
          "name": "[debian-lts-announce] 20230908 [SECURITY] [DLA 3559-1] libssh2 security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00006.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2019-17498",
    "datePublished": "2019-10-21T00:00:00.000Z",
    "dateReserved": "2019-10-11T00:00:00.000Z",
    "dateUpdated": "2024-08-05T01:40:15.913Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

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.

Action not permitted

CNVD-2019-37882

CVE-2019-17498 (GCVE-0-2019-17498)

Tags

Sightings

Nomenclature

Related by attack behaviour