A vulnerability was found in SharpCompress up to 0.20.x. It has been rated as problematic. This issue affects an unknown code block of the component Extraction. The manipulation with the input value ../ leads to a path traversal vulnerability (Zip-Slip). Using CWE to declare the problem leads to 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. Impacted is integrity, and availability. The summary by CVE is:

SharpCompress before 0.21.0 is vulnerable to directory traversal, allowing attackers to write to arbitrary files via a ../ (dot dot slash) in a Zip archive entry that is mishandled during extraction. This vulnerability is also known as 'Zip-Slip'.

The bug was discovered 04/13/2018. The weakness was presented 07/25/2018 (GitHub Repository). It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2018-1002206 since 07/25/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. 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 was handled as a non-public zero-day exploit for at least 103 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 0.21.0 eliminates this vulnerability.

See VDB-113959, VDB-122177, VDB-122178 and VDB-122179 for similar entries.

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• SharpCompress

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• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20

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CPE 2.2info

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