Samba up to 4.9.14/4.10.9/4.11.1 Client path traversal

Summaryinfo

A vulnerability identified as critical has been detected in Samba up to 4.9.14/4.10.9/4.11.1. This impacts an unknown function of the component Client. Performing a manipulation results in path traversal. This vulnerability is reported as CVE-2019-10218. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Samba up to 4.9.14/4.10.9/4.11.1 (File Transfer Software). It has been classified as critical. This affects some unknown functionality of the component Client. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A flaw was found in the samba client, all samba versions before samba 4.11.2, 4.10.10 and 4.9.15, where a malicious server can supply a pathname to the client with separators. This could allow the client to access files and folders outside of the SMB network pathnames. An attacker could use this vulnerability to create files outside of the current working directory using the privileges of the client user.

The weakness was disclosed 11/06/2019 as not defined bug report (Bugzilla). The advisory is shared at bugzilla.redhat.com. This vulnerability is uniquely identified as CVE-2019-10218 since 03/27/2019. It is possible to initiate the attack remotely. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 236653 (Alibaba Cloud Linux 3 : 0077: samba (ALINUX3-SA-2021:0077)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.9.15, 4.10.10 or 4.11.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (236653). The entries VDB-145079 and VDB-145078 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• File Transfer Software

Name

• Samba

Version

• 4.9.0
• 4.9.1
• 4.9.2
• 4.9.3
• 4.9.4
• 4.9.5
• 4.9.6
• 4.9.7
• 4.9.8
• 4.9.9
• 4.9.10
• 4.9.11
• 4.9.12
• 4.9.13
• 4.9.14
• 4.10.0
• 4.10.1
• 4.10.2
• 4.10.3
• 4.10.4
• 4.10.5
• 4.10.6
• 4.10.7
• 4.10.8
• 4.10.9
• 4.11.0
• 4.11.1

License

• open-source

Website

• Product: https://www.samba.org/

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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