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vuln-ubuntu/data/osv/usn/USN-5308-1.json
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{
"schema_version": "1.7.0",
"id": "USN-5308-1",
"summary": "libssh2 vulnerabilities",
"details": "It was discovered that libssh2 mishandled certain input. If libssh2 were\nused to connect to a malicious or compromised SSH server, a remote,\nunauthenticated attacker could possibly execute arbitrary code on the client \nsystem. (CVE-2019-3855)\n\nIt was discovered that libssh2 incorrectly handled prompt requests. A\nremote attacker could possibly use this issue to execute arbitrary code.\n(CVE-2019-3856)\n\nIt was discovered that libssh2 incorrectly handled SSH_MSG_CHANNEL_REQUEST\npackets. A remote attacker could possibly use this issue to execute\narbitrary code, cause a denial of service, or obtain sensitive information. \n(CVE-2019-3857, CVE-2019-3862)\n\nIt was discovered that libssh2 incorrectly handled specially crafted SFTP\npackets. A remote attacker could possibly use this issue to cause a denial\nof service or obtain sensitive information. (CVE-2019-3858)\n\nIt was discovered that libssh2 incorrectly handled certain specially\ncrafted packets. A remote attacker could possibly use this issue to cause a\ndenial of service or obtain sensitive information. (CVE-2019-3859)\n\nIt was discovered that libssh2 incorrectly handled SFTP packets with empty\npayloads. A remote attacker could possibly use this issue to cause a denial\nof service or obtain sensitive information. (CVE-2019-3860)\n\nIt was discovered that libssh2 incorrectly handled padding values in SSH\npackets. A remote attacker could possibly use this issue to cause a denial\nof service or obtain sensitive information. (CVE-2019-3861)\n\nIt was discovered that libssh2 incorrectly handled interactive response\nmessages length. A remote attacker could possibly use this issue to execute\narbitrary code. (CVE-2019-3863)\n\nIt was discovered that libssh2 incorrectly handled the Diffie Hellman key\nexchange. A remote attacker could possibly use this issue to cause a denial\nof service or obtain sensitive information. (CVE-2019-13115)\n\nIt was discovered that libssh2 incorrectly handled bound checks in\nSSH_MSG_DISCONNECT. A remote attacker could possibly use this issue to\ncause a denial of service or obtain sensitive information. (CVE-2019-17498)\n",
"aliases": [],
"upstream": [
"UBUNTU-CVE-2019-3855",
"UBUNTU-CVE-2019-3856",
"UBUNTU-CVE-2019-3857",
"UBUNTU-CVE-2019-3858",
"UBUNTU-CVE-2019-3859",
"UBUNTU-CVE-2019-3860",
"UBUNTU-CVE-2019-3861",
"UBUNTU-CVE-2019-3862",
"UBUNTU-CVE-2019-3863",
"UBUNTU-CVE-2019-13115",
"UBUNTU-CVE-2019-17498"
],
"related": [],
"published": "2022-03-07T23:47:01Z",
"modified": "2026-06-25T10:46:04Z",
"affected": [
{
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "libssh2",
"purl": "pkg:deb/ubuntu/libssh2@1.5.0-2ubuntu0.1+esm1?arch=source&distro=esm-apps/xenial"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.5.0-2ubuntu0.1+esm1"
}
]
}
],
"versions": [
"1.5.0-2",
"1.5.0-2ubuntu0.1"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libssh2-1",
"binary_version": "1.5.0-2ubuntu0.1+esm1"
}
],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"cves": [
{
"id": "CVE-2019-3855",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2019-3856",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2019-3857",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2019-3858",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2019-3859",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2019-3860",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2019-3861",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2019-3862",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2019-3863",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2019-13115",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2019-17498",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
}
}
],
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5308-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-3855"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-3856"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-3857"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-3858"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-3859"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-3860"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-3861"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-3862"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-3863"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-13115"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-17498"
}
]
}
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