Zero-day Vulnerability Database

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Zero-day vulnerabilities discovered: 1

Arbitrary file upload in MoinMoin
CVE-2012-6081

Arbitrary file upload

The vulnerability allows a remote authenticated attacker to compromise system.

The weakness exists due to insufficient validation of the filename extension when uploading files twikidraw (action/twikidraw.py) and anywikidraw (action/anywikidraw.py) actions. A remote authenticated attacker with write permissions can upload and execute arbitrary file with executable extension.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Note: the vulnerability was being actively exploited.
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The vulnerability was exploited to compromise Debian's wiki and Python documentation website in December, 2012. The exploitation's method used is based on an exploit from Pastebin.

Software: MoinMoin

The vulnerability was exploited to compromise Debian's wiki and Python documentation website in December, 2012. The exploitation's method used is based on an exploit from Pastebin.

Links:

http://hg.moinmo.in/moin/1.9/rev/7e7e1cbb9d3f
https://moinmo.in/SecurityFixes/AdvisoryForDistributors
https://moinmo.in/SecurityFixes/Installation
https://moinmo.in/SecurityFixes/CVE-2012-6081
https://pentesterlab.com/exercises/cve-2012-6081/course
https://community.rapid7.com/community/metasploit/blog/2013/06/27/from-the-wild-to-metasploit

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About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.