ubuntu-cve-2017-9461
Vulnerability from osv_ubuntu
Published
2017-06-06 00:00
Modified
2026-04-22 07:38
Summary
Details
smbd in Samba before 4.4.10 and 4.5.x before 4.5.6 has a denial of service vulnerability (fd_open_atomic infinite loop with high CPU usage and memory consumption) due to wrongly handling dangling symlinks.
Severity
6.5 (Medium)
N/A (UNKNOWN)
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libnss-winbind",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.9"
},
{
"binary_name": "libpam-smbpass",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.9"
},
{
"binary_name": "libpam-winbind",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.9"
},
{
"binary_name": "libparse-pidl-perl",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.9"
},
{
"binary_name": "libsmbclient",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.9"
},
{
"binary_name": "libsmbsharemodes0",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.9"
},
{
"binary_name": "libwbclient0",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.9"
},
{
"binary_name": "python-samba",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.9"
},
{
"binary_name": "registry-tools",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.9"
},
{
"binary_name": "samba",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.9"
},
{
"binary_name": "samba-common",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.9"
},
{
"binary_name": "samba-common-bin",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.9"
},
{
"binary_name": "samba-dsdb-modules",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.9"
},
{
"binary_name": "samba-libs",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.9"
},
{
"binary_name": "samba-testsuite",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.9"
},
{
"binary_name": "samba-vfs-modules",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.9"
},
{
"binary_name": "smbclient",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.9"
},
{
"binary_name": "winbind",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.9"
}
]
},
"package": {
"ecosystem": "Ubuntu:14.04:LTS",
"name": "samba",
"purl": "pkg:deb/ubuntu/samba@2:4.3.11+dfsg-0ubuntu0.14.04.9?arch=source\u0026distro=trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2:4.3.11+dfsg-0ubuntu0.14.04.9"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2:3.6.18-1ubuntu3",
"2:4.0.10+dfsg-4ubuntu2",
"2:4.0.13+dfsg-1ubuntu1",
"2:4.1.3+dfsg-2ubuntu2",
"2:4.1.3+dfsg-2ubuntu3",
"2:4.1.3+dfsg-2ubuntu4",
"2:4.1.3+dfsg-2ubuntu5",
"2:4.1.6+dfsg-1ubuntu1",
"2:4.1.6+dfsg-1ubuntu2",
"2:4.1.6+dfsg-1ubuntu2.14.04.1",
"2:4.1.6+dfsg-1ubuntu2.14.04.2",
"2:4.1.6+dfsg-1ubuntu2.14.04.3",
"2:4.1.6+dfsg-1ubuntu2.14.04.4",
"2:4.1.6+dfsg-1ubuntu2.14.04.5",
"2:4.1.6+dfsg-1ubuntu2.14.04.7",
"2:4.1.6+dfsg-1ubuntu2.14.04.8",
"2:4.1.6+dfsg-1ubuntu2.14.04.9",
"2:4.1.6+dfsg-1ubuntu2.14.04.11",
"2:4.1.6+dfsg-1ubuntu2.14.04.12",
"2:4.1.6+dfsg-1ubuntu2.14.04.13",
"2:4.3.8+dfsg-0ubuntu0.14.04.2",
"2:4.3.9+dfsg-0ubuntu0.14.04.1",
"2:4.3.9+dfsg-0ubuntu0.14.04.3",
"2:4.3.11+dfsg-0ubuntu0.14.04.1",
"2:4.3.11+dfsg-0ubuntu0.14.04.2",
"2:4.3.11+dfsg-0ubuntu0.14.04.3",
"2:4.3.11+dfsg-0ubuntu0.14.04.4",
"2:4.3.11+dfsg-0ubuntu0.14.04.6",
"2:4.3.11+dfsg-0ubuntu0.14.04.7",
"2:4.3.11+dfsg-0ubuntu0.14.04.8"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "ctdb",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.8"
},
{
"binary_name": "libnss-winbind",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.8"
},
{
"binary_name": "libpam-winbind",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.8"
},
{
"binary_name": "libparse-pidl-perl",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.8"
},
{
"binary_name": "libsmbclient",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.8"
},
{
"binary_name": "libwbclient0",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.8"
},
{
"binary_name": "python-samba",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.8"
},
{
"binary_name": "registry-tools",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.8"
},
{
"binary_name": "samba",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.8"
},
{
"binary_name": "samba-common",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.8"
},
{
"binary_name": "samba-common-bin",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.8"
},
{
"binary_name": "samba-dsdb-modules",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.8"
},
{
"binary_name": "samba-libs",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.8"
},
{
"binary_name": "samba-testsuite",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.8"
},
{
"binary_name": "samba-vfs-modules",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.8"
},
{
"binary_name": "smbclient",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.8"
},
{
"binary_name": "winbind",
"binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.8"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "samba",
"purl": "pkg:deb/ubuntu/samba@2:4.3.11+dfsg-0ubuntu0.16.04.8?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2:4.3.11+dfsg-0ubuntu0.16.04.8"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2:4.1.17+dfsg-4ubuntu2",
"2:4.1.20+dfsg-1ubuntu1",
"2:4.1.20+dfsg-1ubuntu2",
"2:4.1.20+dfsg-1ubuntu3",
"2:4.1.20+dfsg-1ubuntu5",
"2:4.3.3+dfsg-1ubuntu1",
"2:4.3.3+dfsg-1ubuntu2",
"2:4.3.3+dfsg-1ubuntu3",
"2:4.3.6+dfsg-1ubuntu1",
"2:4.3.8+dfsg-0ubuntu1",
"2:4.3.9+dfsg-0ubuntu0.16.04.1",
"2:4.3.9+dfsg-0ubuntu0.16.04.2",
"2:4.3.9+dfsg-0ubuntu0.16.04.3",
"2:4.3.11+dfsg-0ubuntu0.16.04.1",
"2:4.3.11+dfsg-0ubuntu0.16.04.3",
"2:4.3.11+dfsg-0ubuntu0.16.04.5",
"2:4.3.11+dfsg-0ubuntu0.16.04.6",
"2:4.3.11+dfsg-0ubuntu0.16.04.7"
]
}
],
"aliases": [],
"details": "smbd in Samba before 4.4.10 and 4.5.x before 4.5.6 has a denial of service vulnerability (fd_open_atomic infinite loop with high CPU usage and memory consumption) due to wrongly handling dangling symlinks.",
"id": "UBUNTU-CVE-2017-9461",
"modified": "2026-04-22T07:38:16Z",
"published": "2017-06-06T00:00:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2017-9461"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-3348-1"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2017-9461"
}
],
"related": [
"USN-3348-1"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2017-9461"
]
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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