YesWiki, a PHP-based wiki system, has a high-severity vulnerability identified as CVE-2025-24017. This vulnerability allows attackers to exploit a DOM-based XSS on all pages of YesWiki by clicking on a malicious link. The flaw exists in versions up to and including 4.4.5 and is triggered through the search by tag feature, where unvalidated tags can lead to reflected input on the page. This vulnerability can result in the compromise of user accounts, unauthorized modifications of pages and comments, and the extraction of sensitive user data.
The CVSS 3.1 score for this vulnerability is 7.6, indicating a high severity level. The attack vector is network-based, requiring low complexity and no privileges for exploitation, but does necessitate user interaction. The implications of this vulnerability pose significant risks to the confidentiality, integrity, and availability of YesWiki instances, emphasizing the need for immediate remediation.
Organizations using YesWiki should prioritize patching this vulnerability as version 4.5.0 addresses the issue. Failure to apply the patch may lead to severe consequences, including account takeovers and data breaches.
Understanding the exploitation status is crucial. There are currently no known exploits or public proof-of-concept code available, but the vulnerability's characteristics suggest a high risk of being targeted.
Vulnerability Details
The vulnerability allows for cross-site scripting attacks due to improper handling of user input when searching for tags. The lack of server-side sanitization enables attackers to create links that exploit this flaw, leading to potential account compromise, data theft, and modification of content.
This vulnerability is classified under CWE-79, indicating an issue with improper input validation. It is critical for organizations to understand the impact of such vulnerabilities on their systems and take appropriate measures to mitigate risks.
Technical Analysis
The root cause of this vulnerability stems from the failure to properly sanitize user input. Attackers can utilize this to craft malicious links that, when clicked, execute JavaScript code in the context of a user's session. The attack complexity is low, as no special privileges are required to execute the attack, only that the user interacts with the malicious link.
The attack vector is network-based, and user interaction is required for the exploitation to occur. This means that while the vulnerability can be exploited remotely, it relies heavily on social engineering tactics to entice users to click on the crafted links.
In terms of impact, the confidentiality of user data could be compromised, leading to unauthorized access to sensitive information. The integrity of the application is also at risk, as attackers could modify content and permissions. Availability could be affected as well, depending on how the application responds to the exploitation of this vulnerability.
Risk & Impact Analysis
Risk to organizations includes potential account takeover and data compromise. The ability of attackers to manipulate user data and access permissions poses a significant security threat. The impact can extend to the organization's reputation and customer trust, as user data integrity is jeopardized.
With a CVSS score of 7.6, this vulnerability is categorized as high severity, necessitating immediate attention. Organizations should assess their exposure to this vulnerability and prioritize remediation efforts within their security patch cycles. Given the nature of the attack vector, the potential for exploitation is high, especially in environments that heavily utilize YesWiki.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to vendor patch 4.5.0 are affected. Specifically, versions up to and including 4.4.5 are vulnerable to this DOM-based XSS.
Mitigation & Remediation
Organizations should update to YesWiki version 4.5.0 or later to mitigate this vulnerability. If an immediate patch is not feasible, consider implementing input sanitization on all user-generated content and educating users on the risks of clicking on unknown links. Additionally, conduct regular security assessments to identify potential vulnerabilities.
For further assistance, organizations may explore penetration testing to validate their security posture.
Detection Guidance
Monitor logs for suspicious user activity, particularly for changes made to user permissions and content. Look for unusual patterns in user interactions, especially those involving the search feature. Implementation of network signatures to identify potential exploitation attempts can also be beneficial.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability highlights the importance of robust input validation mechanisms in web applications. Organizations should be aware of the trends in DOM-based XSS attacks and ensure their systems are fortified against such vulnerabilities.
Security teams should familiarize themselves with secure coding practices to prevent similar vulnerabilities in the future. Conducting regular training and awareness programs can also help mitigate risks associated with user-generated content.
Organizations should consider establishing a vulnerability management program that incorporates continuous monitoring and assessment strategies to stay ahead of potential threats.
In summary, the CVE-2025-24017 vulnerability serves as a reminder of the critical need for ongoing vigilance in web application security. Establishing effective security practices and maintaining awareness of emerging threats are essential in safeguarding organizational assets.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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