Vulnerability Monitor

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CVE-2015-5370

Samba 3.x and 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 does not properly implement the DCE-RPC layer, which allows remote attackers to perform protocol-downgrade attacks, cause a denial of service (application crash or CPU consumption), or possibly execute arbitrary code on a client system via unspecified vectors.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.9, indicating it can be exploited remotely over the network but requires specific conditions to be met without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts integrity (unauthorized modifications), for affected systems. Impacting 2 products from samba, from canonical 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

2016-04-25T00:59:00.127

Last Modified

2026-05-06T22:30:45.220

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 5.9 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

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

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
NVD-CWE-noinfo

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	samba	samba	3.6.0	Yes
Application	samba	samba	3.6.1	Yes
Application	samba	samba	3.6.2	Yes
Application	samba	samba	3.6.3	Yes
Application	samba	samba	3.6.4	Yes
Application	samba	samba	3.6.5	Yes
Application	samba	samba	3.6.6	Yes
Application	samba	samba	3.6.7	Yes
Application	samba	samba	3.6.8	Yes
Application	samba	samba	3.6.9	Yes
Application	samba	samba	3.6.10	Yes
Application	samba	samba	3.6.11	Yes
Application	samba	samba	3.6.12	Yes
Application	samba	samba	3.6.13	Yes
Application	samba	samba	3.6.14	Yes
Application	samba	samba	3.6.15	Yes
Application	samba	samba	3.6.16	Yes
Application	samba	samba	3.6.17	Yes
Application	samba	samba	3.6.18	Yes
Application	samba	samba	3.6.19	Yes
Application	samba	samba	3.6.20	Yes
Application	samba	samba	3.6.21	Yes
Application	samba	samba	3.6.22	Yes
Application	samba	samba	3.6.23	Yes
Application	samba	samba	3.6.24	Yes
Application	samba	samba	3.6.25	Yes
Application	samba	samba	4.0.0	Yes
Application	samba	samba	4.0.1	Yes
Application	samba	samba	4.0.2	Yes
Application	samba	samba	4.0.3	Yes
Application	samba	samba	4.0.4	Yes
Application	samba	samba	4.0.5	Yes
Application	samba	samba	4.0.6	Yes
Application	samba	samba	4.0.7	Yes
Application	samba	samba	4.0.8	Yes
Application	samba	samba	4.0.9	Yes
Application	samba	samba	4.0.10	Yes
Application	samba	samba	4.0.11	Yes
Application	samba	samba	4.0.12	Yes
Application	samba	samba	4.0.13	Yes
Application	samba	samba	4.0.14	Yes
Application	samba	samba	4.0.15	Yes
Application	samba	samba	4.0.16	Yes
Application	samba	samba	4.0.17	Yes
Application	samba	samba	4.0.18	Yes
Application	samba	samba	4.0.19	Yes
Application	samba	samba	4.0.20	Yes
Application	samba	samba	4.0.21	Yes
Application	samba	samba	4.0.22	Yes
Application	samba	samba	4.0.23	Yes
Application	samba	samba	4.0.24	Yes
Application	samba	samba	4.0.25	Yes
Application	samba	samba	4.0.26	Yes
Application	samba	samba	4.1.0	Yes
Application	samba	samba	4.1.1	Yes
Application	samba	samba	4.1.2	Yes
Application	samba	samba	4.1.3	Yes
Application	samba	samba	4.1.4	Yes
Application	samba	samba	4.1.5	Yes
Application	samba	samba	4.1.6	Yes
Application	samba	samba	4.1.7	Yes
Application	samba	samba	4.1.8	Yes
Application	samba	samba	4.1.9	Yes
Application	samba	samba	4.1.10	Yes
Application	samba	samba	4.1.11	Yes
Application	samba	samba	4.1.12	Yes
Application	samba	samba	4.1.13	Yes
Application	samba	samba	4.1.14	Yes
Application	samba	samba	4.1.15	Yes
Application	samba	samba	4.1.16	Yes
Application	samba	samba	4.1.17	Yes
Application	samba	samba	4.1.18	Yes
Application	samba	samba	4.1.19	Yes
Application	samba	samba	4.1.20	Yes
Application	samba	samba	4.1.21	Yes
Application	samba	samba	4.1.22	Yes
Application	samba	samba	4.1.23	Yes
Application	samba	samba	4.2.0	Yes
Application	samba	samba	4.2.0	Yes
Application	samba	samba	4.2.0	Yes
Application	samba	samba	4.2.0	Yes
Application	samba	samba	4.2.1	Yes
Application	samba	samba	4.2.2	Yes
Application	samba	samba	4.2.3	Yes
Application	samba	samba	4.2.4	Yes
Application	samba	samba	4.2.5	Yes
Application	samba	samba	4.2.6	Yes
Application	samba	samba	4.2.7	Yes
Application	samba	samba	4.2.8	Yes
Application	samba	samba	4.2.9	Yes
Application	samba	samba	4.3.0	Yes
Application	samba	samba	4.3.1	Yes
Application	samba	samba	4.3.2	Yes
Application	samba	samba	4.3.3	Yes
Application	samba	samba	4.3.4	Yes
Application	samba	samba	4.3.5	Yes
Application	samba	samba	4.3.6	Yes
Application	samba	samba	4.4.0	Yes
Operating System	canonical	ubuntu_linux	14.04	Yes
Operating System	canonical	ubuntu_linux	15.10	Yes
Operating System	canonical	ubuntu_linux	16.04	Yes

References

http://badlock.org/ ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182185.html ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182272.html ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182288.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00020.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00021.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00022.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00023.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00024.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00042.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2016-0611.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2016-0612.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2016-0613.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2016-0614.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2016-0618.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2016-0619.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2016-0620.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2016-0624.html ([email protected])
http://www.debian.org/security/2016/dsa-3548 ([email protected])
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html ([email protected])
http://www.securitytracker.com/id/1035533 ([email protected])
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.458012 ([email protected])
http://www.ubuntu.com/usn/USN-2950-1 ([email protected])
http://www.ubuntu.com/usn/USN-2950-2 ([email protected])
http://www.ubuntu.com/usn/USN-2950-3 ([email protected])
http://www.ubuntu.com/usn/USN-2950-4 ([email protected])
http://www.ubuntu.com/usn/USN-2950-5 ([email protected])
https://bto.bluecoat.com/security-advisory/sa122 ([email protected])
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05162399 ([email protected])
https://www.samba.org/samba/history/samba-4.2.10.html ([email protected])
https://www.samba.org/samba/latest_news.html#4.4.2 ([email protected])
https://www.samba.org/samba/security/CVE-2015-5370.html Patch, Vendor Advisory ([email protected])
http://badlock.org/ (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182185.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182272.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182288.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00020.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00021.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00022.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00023.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00024.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00042.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2016-0611.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2016-0612.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2016-0613.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2016-0614.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2016-0618.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2016-0619.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2016-0620.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2016-0624.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2016/dsa-3548 (af854a3a-2127-422b-91ae-364da2661108)
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1035533 (af854a3a-2127-422b-91ae-364da2661108)
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.458012 (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2950-1 (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2950-2 (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2950-3 (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2950-4 (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2950-5 (af854a3a-2127-422b-91ae-364da2661108)
https://bto.bluecoat.com/security-advisory/sa122 (af854a3a-2127-422b-91ae-364da2661108)
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05162399 (af854a3a-2127-422b-91ae-364da2661108)
https://www.samba.org/samba/history/samba-4.2.10.html (af854a3a-2127-422b-91ae-364da2661108)
https://www.samba.org/samba/latest_news.html#4.4.2 (af854a3a-2127-422b-91ae-364da2661108)
https://www.samba.org/samba/security/CVE-2015-5370.html Patch, 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.