#VU80907 Path traversal in DotNetZip.Semverd - CVE-2018-1002205

Vulnerability identifier: #VU80907

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-1002205

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
DotNetZip.Semverd
Universal components / Libraries / Libraries used by multiple products

Vendor: Henrik Feldt

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote attacker can send a specially crafted HTTP request and write arbitrary files on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

DotNetZip.Semverd: before 1.11.0

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External links
https://github.com/haf/DotNetZip.Semverd/commit/55d2c13c0cc64654e18fcdd0038fdb3d7458e366
https://github.com/haf/DotNetZip.Semverd/pull/121
https://github.com/snyk/zip-slip-vulnerability
https://snyk.io/research/zip-slip-vulnerability
https://snyk.io/vuln/SNYK-DOTNET-DOTNETZIP-60245

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.