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vuln-ubuntu/data/osv/usn/USN-5142-1.json
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{
"schema_version": "1.7.0",
"id": "USN-5142-1",
"summary": "samba vulnerabilities",
"details": "Stefan Metzmacher discovered that Samba incorrectly handled SMB1 client\nconnections. A remote attacker could possibly use this issue to downgrade\nconnections to plaintext authentication. (CVE-2016-2124)\n\nAndrew Bartlett discovered that Samba incorrectly mapping domain users to\nlocal users. An authenticated attacker could possibly use this issue to\nbecome root on domain members. (CVE-2020-25717)\n\nAndrew Bartlett discovered that Samba did not correctly sandbox Kerberos\ntickets issues by an RODC. An RODC could print administrator tickets,\ncontrary to expectations. (CVE-2020-25718)\n\nAndrew Bartlett discovered that Samba incorrectly handled Kerberos tickets.\nDelegated administrators could possibly use this issue to impersonate\naccounts, leading to total domain compromise. (CVE-2020-25719)\n\nAndrew Bartlett discovered that Samba did not provide stable AD\nidentifiers to Kerberos acceptors. (CVE-2020-25721)\n\nAndrew Bartlett discovered that Samba did not properly check sensitive\nattributes. An authenticated attacker could possibly use this issue to\nescalate privileges. (CVE-2020-25722)\n\nStefan Metzmacher discovered that Samba incorrectly handled certain large\nDCE/RPC requests. A remote attacker could possibly use this issue to\nbypass signature requirements. (CVE-2021-23192)\n\nWilliam Ross discovered that Samba incorrectly handled memory. A remote\nattacker could use this issue to cause Samba to crash, resulting in a\ndenial of service, or possibly escalate privileges. (CVE-2021-3738)\n\nJoseph Sutton discovered that Samba incorrectly handled certain TGS\nrequests. An authenticated attacker could possibly use this issue to cause\nSamba to crash, resulting in a denial of service. (CVE-2021-3671)\n\nThe fix for CVE-2020-25717 results in possible behaviour changes that could\naffect certain environments. Please see the upstream advisory for more\ninformation:\n\nhttps://www.samba.org/samba/security/CVE-2020-25717.html\n",
"aliases": [],
"upstream": [
"UBUNTU-CVE-2016-2124",
"UBUNTU-CVE-2020-25717",
"UBUNTU-CVE-2020-25718",
"UBUNTU-CVE-2020-25719",
"UBUNTU-CVE-2020-25721",
"UBUNTU-CVE-2020-25722",
"UBUNTU-CVE-2021-3671",
"UBUNTU-CVE-2021-3738",
"UBUNTU-CVE-2021-23192"
],
"related": [],
"published": "2021-11-11T13:02:13Z",
"modified": "2026-04-27T14:11:27Z",
"affected": [
{
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "samba",
"purl": "pkg:deb/ubuntu/samba@2:4.13.14+dfsg-0ubuntu0.20.04.1?arch=source&distro=focal"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:4.13.14+dfsg-0ubuntu0.20.04.1"
}
]
}
],
"versions": [
"2:4.10.7+dfsg-0ubuntu2",
"2:4.10.7+dfsg-0ubuntu3",
"2:4.11.1+dfsg-3ubuntu1",
"2:4.11.1+dfsg-3ubuntu2",
"2:4.11.1+dfsg-3ubuntu4",
"2:4.11.5+dfsg-1ubuntu1",
"2:4.11.5+dfsg-1ubuntu2",
"2:4.11.6+dfsg-0ubuntu1",
"2:4.11.6+dfsg-0ubuntu1.1",
"2:4.11.6+dfsg-0ubuntu1.2",
"2:4.11.6+dfsg-0ubuntu1.3",
"2:4.11.6+dfsg-0ubuntu1.4",
"2:4.11.6+dfsg-0ubuntu1.5",
"2:4.11.6+dfsg-0ubuntu1.6",
"2:4.11.6+dfsg-0ubuntu1.8",
"2:4.11.6+dfsg-0ubuntu1.9",
"2:4.11.6+dfsg-0ubuntu1.10"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "ctdb",
"binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1"
},
{
"binary_name": "libnss-winbind",
"binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1"
},
{
"binary_name": "libpam-winbind",
"binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1"
},
{
"binary_name": "libsmbclient",
"binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1"
},
{
"binary_name": "libwbclient0",
"binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1"
},
{
"binary_name": "python3-samba",
"binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1"
},
{
"binary_name": "registry-tools",
"binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1"
},
{
"binary_name": "samba",
"binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1"
},
{
"binary_name": "samba-common",
"binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1"
},
{
"binary_name": "samba-common-bin",
"binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1"
},
{
"binary_name": "samba-dsdb-modules",
"binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1"
},
{
"binary_name": "samba-libs",
"binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1"
},
{
"binary_name": "samba-testsuite",
"binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1"
},
{
"binary_name": "samba-vfs-modules",
"binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1"
},
{
"binary_name": "smbclient",
"binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1"
},
{
"binary_name": "winbind",
"binary_version": "2:4.13.14+dfsg-0ubuntu0.20.04.1"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:20.04:LTS",
"cves": [
{
"id": "CVE-2016-2124",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25717",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25718",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25719",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25721",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2020-25722",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-3671",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2021-3738",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2021-23192",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
}
}
],
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5142-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2016-2124"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-25717"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-25718"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-25719"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-25721"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-25722"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-3671"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-3738"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-23192"
}
]
}
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