Title: EasyNews NewsDatabase/Template Modification Vulnerability
Severity: MODERATE
Description:
EasyNews is a free, open-source script for displaying news stories on a website.
EasyNews is prone to a vulnerability which may allow a remote attacker to modify information in its news database. As a result, a remote attacker may post unmoderated comments or possibly modify information in the templates used by EasyNews.
This may be exploited by manipulating the arguments for script variables in a web request.
When writing comment data to a save file on the filesystem, easyNews uses a variable ($cid) that can be externally supplied as part of the path. EasyNews does not filter '../' characters from this variable and it is thus possible for an attacker to create or overwrite any file with a '.dat' extension in a directory writeable by the webserver process.
Attackers may overwrite the primary News database, 'news.dat' by supplying the value '../news' for the 'cid' variable.
Earlier versions may also be vulnerable.
Affected Products:
- easyScripts easyNews 1.5.0
References:
- easyScripts: easyNews Product Page
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