USN-2912-1 (UBUNTU-CVE-2015-3146)
Vulnerability from osv_ubuntu – Published: 2016-02-23 14:14 – Updated: 2026-04-22 07:36 – Source websiteMariusz Ziulek discovered that libssh incorrectly handled certain packets. A remote attacker could possibly use this issue to cause libssh to crash, resulting in a denial of service. (CVE-2015-3146)
Aris Adamantiadis discovered that libssh incorrectly generated ephemeral secret keys of 128 bits instead of the recommended 1024 or 2048 bits when using the diffie-hellman-group1 and diffie-hellman-group14 methods. If a remote attacker were able to perform a machine-in-the-middle attack, this flaw could be exploited to view sensitive information. (CVE-2016-0739)
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2015-3146",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2016-0739",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:14.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libssh-4",
"binary_version": "0.6.1-0ubuntu3.3"
}
]
},
"package": {
"ecosystem": "Ubuntu:14.04:LTS",
"name": "libssh",
"purl": "pkg:deb/ubuntu/libssh@0.6.1-0ubuntu3.3?arch=source\u0026distro=trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.6.1-0ubuntu3.3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.5.4-1",
"0.6.1-0ubuntu2",
"0.6.1-0ubuntu3",
"0.6.1-0ubuntu3.1"
]
}
],
"aliases": [],
"details": "Mariusz Ziulek discovered that libssh incorrectly handled certain packets.\nA remote attacker could possibly use this issue to cause libssh to crash,\nresulting in a denial of service.\n(CVE-2015-3146)\n\nAris Adamantiadis discovered that libssh incorrectly generated ephemeral\nsecret keys of 128 bits instead of the recommended 1024 or 2048 bits when\nusing the diffie-hellman-group1 and diffie-hellman-group14 methods. If a\nremote attacker were able to perform a machine-in-the-middle attack, this flaw\ncould be exploited to view sensitive information. (CVE-2016-0739)\n",
"id": "USN-2912-1",
"modified": "2026-04-22T07:36:33Z",
"published": "2016-02-23T14:14:59Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-2912-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2015-3146"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2016-0739"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "libssh vulnerabilities",
"upstream": [
"UBUNTU-CVE-2015-3146",
"UBUNTU-CVE-2016-0739"
]
}
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