cantata up to 2.3.1 cantata-mounter D-Bus Service mounter.cpp mpOk path traversal

Summaryinfo

A vulnerability classified as critical has been found in cantata up to 2.3.1. This affects the function mpOk of the file mounter.cpp of the component cantata-mounter D-Bus Service. This manipulation causes path traversal. This vulnerability is handled as CVE-2018-12559. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in cantata up to 2.3.1. It has been declared as critical. Affected by this vulnerability is the function mpOk of the file mounter.cpp of the component cantata-mounter D-Bus Service. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in the cantata-mounter D-Bus service in Cantata through 2.3.1. The mount target path check in mounter.cpp `mpOk()` is insufficient. A regular user can consequently mount a CIFS filesystem anywhere (e.g., outside of the /home directory tree) by passing directory traversal sequences such as a home/../usr substring.

The bug was discovered 06/19/2018. The weakness was released 06/19/2018 (Website). It is possible to read the advisory at openwall.com. This vulnerability is known as CVE-2018-12559 since 06/19/2018. The exploitation appears to be easy. The attack can be launched remotely. Required for exploitation is a single authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 110950 (Fedora 27 : cantata (2018-9296823b6c)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277687 (Fedora Security Update for cantata (FEDORA-2018-9296823b6c)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (110950). Entries connected to this vulnerability are available at VDB-119672, VDB-119673 and VDB-119674. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

• cantata

Version

• 2.3.0
• 2.3.1

License

• open-source

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CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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