Studio 42 elFinder up to 2.1.35 elFinder.class.php zipdl path traversal

Summaryinfo

A vulnerability has been found in Studio 42 elFinder up to 2.1.35 and classified as critical. Impacted is the function zipdl of the file elFinder.class.php. This manipulation causes path traversal. This vulnerability appears as CVE-2018-9109. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Studio 42 elFinder up to 2.1.35. It has been declared as critical. Affected by this vulnerability is the function zipdl of the file elFinder.class.php. 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 integrity, and availability. The summary by CVE is:

Studio 42 elFinder before 2.1.36 has Directory Traversal via the zipdl() function in elFinder.class.php, resulting in file deletion.

The bug was discovered 03/28/2017. The weakness was presented 03/28/2018 (GitHub Repository). The advisory is shared at github.com. This vulnerability is known as CVE-2018-9109 since 03/28/2018. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 365 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:elFinder.class.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 2.1.36 eliminates this vulnerability.

See VDB-115154 for similar entry. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Studio 42

Name

• elFinder

Version

• 2.1.0
• 2.1.1
• 2.1.2
• 2.1.3
• 2.1.4
• 2.1.5
• 2.1.6
• 2.1.7
• 2.1.8
• 2.1.9
• 2.1.10
• 2.1.11
• 2.1.12
• 2.1.13
• 2.1.14
• 2.1.15
• 2.1.16
• 2.1.17
• 2.1.18
• 2.1.19
• 2.1.20
• 2.1.21
• 2.1.22
• 2.1.23
• 2.1.24
• 2.1.25
• 2.1.26
• 2.1.27
• 2.1.28
• 2.1.29
• 2.1.30
• 2.1.31
• 2.1.32
• 2.1.33
• 2.1.34
• 2.1.35

License

• open-source

CPE 2.3info

• 🔍
• 🔍
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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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