Vulnerability Monitor

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CVE-2015-7560

The SMB1 implementation in smbd in Samba 3.x and 4.x before 4.1.23, 4.2.x before 4.2.9, 4.3.x before 4.3.6, and 4.4.x before 4.4.0rc4 allows remote authenticated users to modify arbitrary ACLs by using a UNIX SMB1 call to create a symlink, and then using a non-UNIX SMB1 call to write to the ACL content.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts integrity (unauthorized modifications), for affected systems. Impacting 3 products from samba, from canonical, from debian organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2016, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2016-03-13T22:59:00.123

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: SINGLE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

8.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-284

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	samba	samba	< 4.1.23	Yes
Application	samba	samba	< 4.2.9	Yes
Application	samba	samba	< 4.3.6	Yes
Application	samba	samba	4.4.0	Yes
Application	samba	samba	4.4.0	Yes
Application	samba	samba	4.4.0	Yes
Operating System	canonical	ubuntu_linux	12.04	Yes
Operating System	canonical	ubuntu_linux	14.04	Yes
Operating System	canonical	ubuntu_linux	15.10	Yes
Operating System	debian	debian_linux	7.0	Yes
Operating System	debian	debian_linux	8.0	Yes

References

http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178730.html Mailing List, Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178764.html Mailing List, Third Party Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/180000.html Mailing List, Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00063.html Mailing List, Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00064.html Mailing List, Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00065.html Mailing List, Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00081.html Mailing List, Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00090.html Mailing List, Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00092.html Mailing List, Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00042.html Mailing List, Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html Mailing List, Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html Mailing List, Third Party Advisory ([email protected])
http://www.debian.org/security/2016/dsa-3514 Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/84267 Third Party Advisory, VDB Entry ([email protected])
http://www.securitytracker.com/id/1035220 Third Party Advisory, VDB Entry ([email protected])
http://www.ubuntu.com/usn/USN-2922-1 Third Party Advisory ([email protected])
https://bugzilla.samba.org/show_bug.cgi?id=11648 Issue Tracking, Vendor Advisory ([email protected])
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05121842 Third Party Advisory ([email protected])
https://www.samba.org/samba/security/CVE-2015-7560.html Vendor Advisory ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178730.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178764.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/180000.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00063.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00064.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00065.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00081.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00090.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00092.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00042.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2016/dsa-3514 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/84267 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1035220 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2922-1 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.samba.org/show_bug.cgi?id=11648 Issue Tracking, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05121842 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.samba.org/samba/security/CVE-2015-7560.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For samba's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.