Steinbeis Allegra 7.5.0 Build 29 getFileContentAsString path traversal

Summaryinfo

A vulnerability marked as critical has been reported in Steinbeis Allegra 7.5.0 Build 29. The impacted element is the function getFileContentAsString. This manipulation causes path traversal. The identification of this vulnerability is CVE-2023-51648. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Steinbeis Allegra 7.5.0 Build 29. It has been declared as critical. Affected by this vulnerability is the function getFileContentAsString. 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. The summary by CVE is:

Allegra getFileContentAsString Directory Traversal Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Allegra. Although authentication is required to exploit this vulnerability, the product implements a registration mechanism that can be used to create a new user with a sufficient privilege level. The specific flaw exists within the getFileContentAsString method. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to disclose stored credentials, leading to further compromise. Was ZDI-CAN-22530.

It is possible to read the advisory at zerodayinitiative.com. This vulnerability is known as CVE-2023-51648 since 12/20/2023. The exploitation appears to be easy. The attack can be launched remotely. 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.

Upgrading to version 7.5.1 eliminates this vulnerability. The upgrade is hosted for download at trackplus.com.

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Productinfo

Vendor

• Steinbeis

Name

• Allegra

Version

• 7.5.0 Build 29

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CPE 2.2info

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