Steinbeis Allegra 7.5.0 Build 29 unzipFile path traversal

Summaryinfo

A vulnerability identified as critical has been detected in Steinbeis Allegra 7.5.0 Build 29. This affects the function unzipFile. This manipulation causes path traversal. This vulnerability is handled as CVE-2023-51645. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Steinbeis Allegra 7.5.0 Build 29. Affected by this vulnerability is the function unzipFile. 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:

Allegra unzipFile Directory Traversal Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Allegra. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the unzipFile 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 execute code in the context of LOCAL SERVICE. Was ZDI-CAN-22513.

It is possible to read the advisory at zerodayinitiative.com. This vulnerability is known as CVE-2023-51645 since 12/20/2023. The exploitation appears to be easy. The attack can be launched remotely. The exploitation needs additional levels of successful 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.

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

CPE 2.3info

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CPE 2.2info

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