CVE-2017-12979 : Exploit Details and Defense Strategies
Learn about CVE-2017-12979, a stored cross-site scripting (XSS) vulnerability in DokuWiki allowing attackers to execute JavaScript code. Find out how to mitigate and prevent this security issue.
A stored cross-site scripting (XSS) vulnerability was found in DokuWiki until version 2017-02-19c. This vulnerability allows attackers to execute JavaScript code by manipulating a malicious language name within a code element in the /inc/parser/xhtml.php file.
Understanding CVE-2017-12979
This CVE entry describes a stored XSS vulnerability in DokuWiki that could be exploited by attackers with the ability to create or modify wiki pages.
What is CVE-2017-12979?
The vulnerability in DokuWiki allows for the execution of JavaScript code by inserting a malicious language name within a code element.
The Impact of CVE-2017-12979
Attackers can exploit this vulnerability to execute arbitrary JavaScript code by creating or editing a wiki page with the malicious element.
Technical Details of CVE-2017-12979
DokuWiki through version 2017-02-19c is susceptible to stored XSS when rendering a malicious language name in a code element in /inc/parser/xhtml.php.
Vulnerability Description
The vulnerability arises from improper handling of user input, allowing malicious scripts to be executed within the application.
Affected Systems and Versions
- Product: DokuWiki
- Versions affected: Until version 2017-02-19c
Exploitation Mechanism
Attackers can exploit this vulnerability by manipulating a language name within a code element to trigger JavaScript execution.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent the exploitation of CVE-2017-12979.
Immediate Steps to Take
- Update DokuWiki to a patched version that addresses the XSS vulnerability.
- Regularly monitor and review wiki pages for any suspicious or unauthorized changes.
Long-Term Security Practices
- Educate users on secure coding practices to prevent XSS vulnerabilities.
- Implement input validation and output encoding to mitigate XSS risks.
Patching and Updates
Ensure timely installation of security patches and updates for DokuWiki to prevent exploitation of known vulnerabilities.