CVE-2017-9461

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.

CVSS v3 6.5 MEDIUM
CVSS v2.0 6.8 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

V3 Legend

Vector : AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:L/Au:S/C:N/I:N/A:C

Exploitability : 8.0 / Impact : 6.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

Link	Resource
http://www.securityfocus.com/bid/99455	Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2017:1950	Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2338	Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2778	Third Party Advisory
https://bugs.debian.org/864291	Exploit Issue Tracking Patch Third Party Advisory
https://bugzilla.samba.org/show_bug.cgi?id=12572	Exploit Issue Tracking Patch Third Party Advisory VDB Entry
https://git.samba.org/?p=samba.git%3Ba=commit%3Bh=10c3e3923022485c720f322ca4f0aca5d7501310
https://lists.debian.org/debian-lts-announce/2019/04/msg00013.html	Third Party Advisory
http://www.securityfocus.com/bid/99455	Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2017:1950	Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2338	Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2778	Third Party Advisory
https://bugs.debian.org/864291	Exploit Issue Tracking Patch Third Party Advisory
https://bugzilla.samba.org/show_bug.cgi?id=12572	Exploit Issue Tracking Patch Third Party Advisory VDB Entry
https://git.samba.org/?p=samba.git%3Ba=commit%3Bh=10c3e3923022485c720f322ca4f0aca5d7501310
https://lists.debian.org/debian-lts-announce/2019/04/msg00013.html	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:samba:samba::::::::
	cpe:2.3:a:samba:samba:4.5.0:::::::*
	cpe:2.3:a:samba:samba:4.5.1:::::::*
	cpe:2.3:a:samba:samba:4.5.2:::::::*
	cpe:2.3:a:samba:samba:4.5.3:::::::*
	cpe:2.3:a:samba:samba:4.5.4:::::::*
	cpe:2.3:a:samba:samba:4.5.5:::::::*

Configuration 2 (hide)

OR	cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:::::::*

Configuration 3 (hide)

cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

History

21 Nov 2024, 03:36

Type	Values Removed	Values Added
References	~~() http://www.securityfocus.com/bid/99455 - Third Party Advisory, VDB Entry~~	() http://www.securityfocus.com/bid/99455 - Third Party Advisory, VDB Entry
References	~~() https://access.redhat.com/errata/RHSA-2017:1950 - Third Party Advisory~~	() https://access.redhat.com/errata/RHSA-2017:1950 - Third Party Advisory
References	~~() https://access.redhat.com/errata/RHSA-2017:2338 - Third Party Advisory~~	() https://access.redhat.com/errata/RHSA-2017:2338 - Third Party Advisory
References	~~() https://access.redhat.com/errata/RHSA-2017:2778 - Third Party Advisory~~	() https://access.redhat.com/errata/RHSA-2017:2778 - Third Party Advisory
References	~~() https://bugs.debian.org/864291 - Exploit, Issue Tracking, Patch, Third Party Advisory~~	() https://bugs.debian.org/864291 - Exploit, Issue Tracking, Patch, Third Party Advisory
References	~~() https://bugzilla.samba.org/show_bug.cgi?id=12572 - Exploit, Issue Tracking, Patch, Third Party Advisory, VDB Entry~~	() https://bugzilla.samba.org/show_bug.cgi?id=12572 - Exploit, Issue Tracking, Patch, Third Party Advisory, VDB Entry
References	~~() https://git.samba.org/?p=samba.git%3Ba=commit%3Bh=10c3e3923022485c720f322ca4f0aca5d7501310 -~~	() https://git.samba.org/?p=samba.git%3Ba=commit%3Bh=10c3e3923022485c720f322ca4f0aca5d7501310 -
References	~~() https://lists.debian.org/debian-lts-announce/2019/04/msg00013.html - Third Party Advisory~~	() https://lists.debian.org/debian-lts-announce/2019/04/msg00013.html - Third Party Advisory

Information

Published : 2017-06-06 21:29

Updated : 2025-04-20 01:37

NVD link : CVE-2017-9461

Mitre link : CVE-2017-9461

CVE.ORG link : CVE-2017-9461

JSON object : View

Products Affected

redhat

enterprise_linux_server
enterprise_linux_server_aus
enterprise_linux_server_tus
enterprise_linux_workstation
enterprise_linux_server_eus
enterprise_linux_desktop

debian

debian_linux

samba

samba

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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"confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "published": "2017-06-06T21:29:00.313", "references": [{"url": "http://www.securityfocus.com/bid/99455", "tags": ["Third Party Advisory", "VDB Entry"], "source": "cve@mitre.org"}, {"url": "https://access.redhat.com/errata/RHSA-2017:1950", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://access.redhat.com/errata/RHSA-2017:2338", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://access.redhat.com/errata/RHSA-2017:2778", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://bugs.debian.org/864291", "tags": ["Exploit", "Issue Tracking", "Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://bugzilla.samba.org/show_bug.cgi?id=12572", "tags": ["Exploit", "Issue Tracking", "Patch", "Third Party Advisory", "VDB Entry"], "source": "cve@mitre.org"}, {"url": "https://git.samba.org/?p=samba.git%3Ba=commit%3Bh=10c3e3923022485c720f322ca4f0aca5d7501310", "source": "cve@mitre.org"}, {"url": "https://lists.debian.org/debian-lts-announce/2019/04/msg00013.html", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.securityfocus.com/bid/99455", "tags": ["Third Party Advisory", "VDB Entry"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://access.redhat.com/errata/RHSA-2017:1950", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://access.redhat.com/errata/RHSA-2017:2338", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://access.redhat.com/errata/RHSA-2017:2778", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://bugs.debian.org/864291", "tags": ["Exploit", "Issue Tracking", "Patch", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://bugzilla.samba.org/show_bug.cgi?id=12572", "tags": ["Exploit", "Issue Tracking", "Patch", "Third Party Advisory", "VDB Entry"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.samba.org/?p=samba.git%3Ba=commit%3Bh=10c3e3923022485c720f322ca4f0aca5d7501310", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2019/04/msg00013.html", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-835"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "smbd en Samba versiones anteriores a 4.4.10 y 4.5.x versiones anteriores a 4.5.6, tienen una vulnerabilidad de denegaci\u00f3n de servicio (fd_open_atomic infinite loop con un alto uso de CPU y consumo de memoria) debido a un manejo inadecuado de los enlaces simb\u00f3licos colgantes."}], "lastModified": "2025-04-20T01:37:25.860", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BCA1676B-E93D-4B1B-87EB-5E9A3F38C13A", "versionEndIncluding": "4.4.9"}, {"criteria": "cpe:2.3:a:samba:samba:4.5.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8400346B-095A-4022-A454-1E0782B66357"}, {"criteria": "cpe:2.3:a:samba:samba:4.5.1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E0F44626-3477-4804-88D7-847DEC41AA2E"}, {"criteria": "cpe:2.3:a:samba:samba:4.5.2:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C992A5CB-44AF-4F93-934B-D6995886B2D3"}, {"criteria": 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6.5 /10

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

6.8 /10

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

JSON object

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6.5^/10

6.8^/10

Attach tags to `CVE-2017-9461`