Samba CVE-2019-10218 Path Traversal Arbitrary File Write Vulnerability

Description

Samba is prone to an arbitrary file write vulnerability. Successful exploits may allow an attacker to write arbitrary files to the affected system. This may aid in further attacks.

Technologies Affected

• Samba Samba 3.4.0
• Samba Samba 3.4.1
• Samba Samba 3.4.10
• Samba Samba 3.4.11
• Samba Samba 3.4.12
• Samba Samba 3.4.13
• Samba Samba 3.4.14
• Samba Samba 3.4.15
• Samba Samba 3.4.16
• Samba Samba 3.4.17
• Samba Samba 3.4.2
• Samba Samba 3.4.5
• Samba Samba 3.4.6
• Samba Samba 3.4.7
• Samba Samba 3.4.8
• Samba Samba 3.4.9
• Samba Samba 4.0.0
• Samba Samba 4.0.0Tp5
• Samba Samba 4.0.1
• Samba Samba 4.0.10
• Samba Samba 4.0.11
• Samba Samba 4.0.12
• Samba Samba 4.0.13
• Samba Samba 4.0.14
• Samba Samba 4.0.15
• Samba Samba 4.0.16
• Samba Samba 4.0.17
• Samba Samba 4.0.18
• Samba Samba 4.0.19
• Samba Samba 4.0.2
• Samba Samba 4.0.20
• Samba Samba 4.0.21
• Samba Samba 4.0.22
• Samba Samba 4.0.23
• Samba Samba 4.0.24
• Samba Samba 4.0.3
• Samba Samba 4.0.4
• Samba Samba 4.0.5
• Samba Samba 4.0.6
• Samba Samba 4.0.7
• Samba Samba 4.0.8
• Samba Samba 4.0.9
• Samba Samba 4.1.0
• Samba Samba 4.1.1
• Samba Samba 4.1.10
• Samba Samba 4.1.11
• Samba Samba 4.1.13
• Samba Samba 4.1.14
• Samba Samba 4.1.15
• Samba Samba 4.1.16
• Samba Samba 4.1.17
• Samba Samba 4.1.18
• Samba Samba 4.1.19
• Samba Samba 4.1.2
• Samba Samba 4.1.20
• Samba Samba 4.1.21
• Samba Samba 4.1.22
• Samba Samba 4.1.23
• Samba Samba 4.1.3
• Samba Samba 4.1.5
• Samba Samba 4.1.6
• Samba Samba 4.1.7
• Samba Samba 4.1.8
• Samba Samba 4.1.9
• Samba Samba 4.10
• Samba Samba 4.10.1
• Samba Samba 4.10.2
• Samba Samba 4.10.3
• Samba Samba 4.10.4
• Samba Samba 4.10.5
• Samba Samba 4.10.7
• Samba Samba 4.10.8
• Samba Samba 4.10.9
• Samba Samba 4.11.0
• Samba Samba 4.2.0
• Samba Samba 4.2.1
• Samba Samba 4.2.10
• Samba Samba 4.2.11
• Samba Samba 4.2.12
• Samba Samba 4.2.13
• Samba Samba 4.2.14
• Samba Samba 4.2.2
• Samba Samba 4.2.3
• Samba Samba 4.2.4
• Samba Samba 4.2.5
• Samba Samba 4.2.6
• Samba Samba 4.2.7
• Samba Samba 4.2.8
• Samba Samba 4.2.9
• Samba Samba 4.2rc4
• Samba Samba 4.3.0
• Samba Samba 4.3.1
• Samba Samba 4.3.10
• Samba Samba 4.3.11
• Samba Samba 4.3.13
• Samba Samba 4.3.2
• Samba Samba 4.3.3
• Samba Samba 4.3.4
• Samba Samba 4.3.5
• Samba Samba 4.3.6
• Samba Samba 4.3.7
• Samba Samba 4.3.8
• Samba Samba 4.3.9
• Samba Samba 4.4.0
• Samba Samba 4.4.1
• Samba Samba 4.4.10
• Samba Samba 4.4.11
• Samba Samba 4.4.12
• Samba Samba 4.4.14
• Samba Samba 4.4.15
• Samba Samba 4.4.16
• Samba Samba 4.4.2
• Samba Samba 4.4.3
• Samba Samba 4.4.4
• Samba Samba 4.4.5
• Samba Samba 4.4.6
• Samba Samba 4.4.7
• Samba Samba 4.4.8
• Samba Samba 4.4.9
• Samba Samba 4.5.0
• Samba Samba 4.5.1
• Samba Samba 4.5.10
• Samba Samba 4.5.12
• Samba Samba 4.5.13
• Samba Samba 4.5.14
• Samba Samba 4.5.15
• Samba Samba 4.5.16
• Samba Samba 4.5.2
• Samba Samba 4.5.3
• Samba Samba 4.5.4
• Samba Samba 4.5.5
• Samba Samba 4.5.6
• Samba Samba 4.5.7
• Samba Samba 4.6.0
• Samba Samba 4.6.1
• Samba Samba 4.6.11
• Samba Samba 4.6.14
• Samba Samba 4.6.16
• Samba Samba 4.6.4
• Samba Samba 4.6.6
• Samba Samba 4.6.7
• Samba Samba 4.6.8
• Samba Samba 4.7.0
• Samba Samba 4.7.1
• Samba Samba 4.7.12
• Samba Samba 4.7.2
• Samba Samba 4.7.3
• Samba Samba 4.7.4
• Samba Samba 4.7.5
• Samba Samba 4.7.6
• Samba Samba 4.7.7
• Samba Samba 4.7.8
• Samba Samba 4.7.9
• Samba Samba 4.8.0
• Samba Samba 4.8.1
• Samba Samba 4.8.10
• Samba Samba 4.8.11
• Samba Samba 4.8.12
• Samba Samba 4.8.2
• Samba Samba 4.8.3
• Samba Samba 4.8.4
• Samba Samba 4.8.6
• Samba Samba 4.8.7
• Samba Samba 4.8.8
• Samba Samba 4.8.9
• Samba Samba 4.9.0
• Samba Samba 4.9.1
• Samba Samba 4.9.12
• Samba Samba 4.9.13
• Samba Samba 4.9.2
• Samba Samba 4.9.3
• Samba Samba 4.9.4
• Samba Samba 4.9.5
• Samba Samba 4.9.6
• Samba Samba 4.9.7
• Samba Samba 4.9.8
• Samba Samba 4.9.9
• Ubuntu Ubuntu Linux 16.04 LTS
• Ubuntu Ubuntu Linux 18.04 LTS
• Ubuntu Ubuntu Linux 19.04
• Ubuntu Ubuntu Linux 19.10

Recommendations

Block external access at the network boundary, unless external parties require service.
Filter access to the affected computer at the network boundary if global access isn’t needed. Restricting access to only trusted computers and networks might greatly reduce the likelihood of a successful exploit.

Run all software as a nonprivileged user with minimal access rights.
To limit the impact of latent vulnerabilities, configure servers and other applications to run as a nonadministrative user with minimal access rights.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity including unexplained incoming and outgoing traffic. This may indicate exploit attempts or activity that results from successful exploits.

Updates are available. Please see the references or vendor advisory for more information.