GHSA-98VM-QGXX-5RJM

Vulnerability from github – Published: 2022-05-24 16:50 – Updated: 2022-05-24 16:50
VLAI?
Details

In libssh2 before 1.9.0, kex_method_diffie_hellman_group_exchange_sha256_key_exchange in kex.c has an integer overflow that could lead to an out-of-bounds write in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server. This is related to an _libssh2_check_length mistake, and is different from the various issues fixed in 1.8.1, such as CVE-2019-3855.

Severity ?
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2019-13115"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2019-07-16T18:15:00Z",
    "severity": "HIGH"
  },
  "details": "In libssh2 before 1.9.0, kex_method_diffie_hellman_group_exchange_sha256_key_exchange in kex.c has an integer overflow that could lead to an out-of-bounds write in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server. This is related to an _libssh2_check_length mistake, and is different from the various issues fixed in 1.8.1, such as CVE-2019-3855.",
  "id": "GHSA-98vm-qgxx-5rjm",
  "modified": "2022-05-24T16:50:28Z",
  "published": "2022-05-24T16:50:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-13115"
    },
    {
      "type": "WEB",
      "url": "https://github.com/libssh2/libssh2/pull/350"
    },
    {
      "type": "WEB",
      "url": "https://blog.semmle.com/libssh2-integer-overflow"
    },
    {
      "type": "WEB",
      "url": "https://github.com/libssh2/libssh2/compare/02ecf17...42d37aa"
    },
    {
      "type": "WEB",
      "url": "https://libssh2.org/changes.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2019/07/msg00024.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00013.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6LUNHPW64IGCASZ4JQ2J5KDXNZN53DWW"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M7IF3LNHOA75O4WZWIHJLIRMA5LJUED3"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20190806-0002"
    },
    {
      "type": "WEB",
      "url": "https://support.f5.com/csp/article/K13322484"
    },
    {
      "type": "WEB",
      "url": "https://support.f5.com/csp/article/K13322484?utm_source=f5support\u0026amp;utm_medium=RSS"
    },
    {
      "type": "WEB",
      "url": "http://packetstormsecurity.com/files/172834/libssh2-1.8.2-Out-Of-Bounds-Read.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.