sharplibzip prior 1.0 RC1 Extraction ZIP Archive Zip-Slip path traversal

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability classified as problematic was found in sharplibzip. Affected by this vulnerability is an unknown function of the component Extraction. The manipulation with the input value ../ leads to a path traversal vulnerability (Zip-Slip). 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:

sharplibzip before 1.0 RC1 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 published 07/25/2018 by Maksymilian Arciemowicz (GitHub Repository). The advisory is shared at This vulnerability is known as CVE-2018-1002208 since 07/25/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. 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 103 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176810 (Debian Security Update for mono (DLA 1564-1)).

Upgrading to version 1.0 RC1 eliminates this vulnerability.



CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
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VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.7

VulDB Base Score: 4.4
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍



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Name: Zip-Slip
Class: Path traversal / Zip-Slip

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Threat Intelligenceinfo

Interest: 🔍
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Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: sharplibzip 1.0 RC1


06/26/2009 🔍
04/13/2018 +3213 days 🔍
07/25/2018 +102 days 🔍
07/25/2018 +0 days 🔍
07/25/2018 +0 days 🔍
07/26/2018 +1 days 🔍
04/25/2023 +1734 days 🔍


Advisory: 232
Researcher: Maksymilian Arciemowicz
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-1002208 (🔍)
SecurityFocus: 35510 - Multiple BSD Distributions 'gdtoa/misc.c' Memory Corruption Vulnerability


Created: 07/26/2018 07:47 AM
Updated: 04/25/2023 04:24 PM
Changes: 07/26/2018 07:47 AM (67), 03/10/2020 09:45 AM (5), 04/25/2023 04:24 PM (4)
Complete: 🔍
Cache ID: 44:0F8:40


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