CVE-2007-5648 in rnote
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in rnote.php in rNote 0.9.7.5 allow remote attackers to inject arbitrary web script or HTML via the (1) d or the (2) u parameter.
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Analysis
by VulDB Data Team • 12/08/2025
The vulnerability identified as CVE-2007-5648 represents a critical cross-site scripting flaw within the rNote 0.9.7.5 web application, specifically affecting the rnote.php script. This vulnerability exposes the application to remote code execution risks where malicious actors can inject arbitrary web scripts or HTML content into the application's response. The flaw manifests through two distinct parameter injection points: the 'd' parameter and the 'u' parameter, both of which lack proper input validation and sanitization mechanisms. The vulnerability stems from the application's failure to adequately filter user-supplied data before incorporating it into dynamic web page content, creating an environment where attacker-controlled input can be executed within the context of other users' browsers.
From a technical perspective, this vulnerability aligns with CWE-79 which defines cross-site scripting as the improper handling of untrusted data within web applications. The rNote application fails to implement proper output encoding or sanitization when processing the 'd' and 'u' parameters, allowing malicious payloads to be stored and subsequently executed when legitimate users view the affected pages. The vulnerability operates at the application layer where user input flows directly into HTTP responses without appropriate security controls. Attackers can craft malicious URLs containing script tags or other HTML content within these parameters, which when processed by the vulnerable application, get rendered in the browser context of other users who access the affected pages.
The operational impact of this vulnerability extends beyond simple data theft or defacement, as it creates persistent security risks for all users interacting with the vulnerable rNote installation. When exploited, the XSS vulnerability enables attackers to perform actions such as stealing session cookies, redirecting users to malicious sites, defacing web pages, or executing arbitrary commands within the context of the victim's browser session. The attack vector is particularly concerning as it requires no privileged access or authentication, making it accessible to anyone who can interact with the vulnerable web application. This vulnerability undermines the fundamental security principle of input validation and demonstrates a critical failure in the application's security architecture that could lead to more severe consequences including complete session hijacking and privilege escalation.
Mitigation strategies for CVE-2007-5648 should focus on implementing comprehensive input validation and output encoding mechanisms within the rNote application. The most effective immediate solution involves sanitizing all user-supplied input through proper encoding techniques such as HTML entity encoding for the 'd' and 'u' parameters before any processing occurs. Additionally, developers should implement Content Security Policy headers to limit the execution of inline scripts and prevent unauthorized code injection. The application should also adopt parameterized queries or input validation routines that reject suspicious characters or patterns commonly associated with XSS attacks. Security practitioners should consider implementing web application firewalls to detect and block malicious payloads attempting to exploit this vulnerability. Organizations using rNote 0.9.7.5 should prioritize upgrading to a patched version of the application, as this vulnerability represents a well-known flaw that has been addressed in subsequent releases. The remediation approach should also include comprehensive security testing including dynamic application security testing and manual code review to identify and address similar vulnerabilities in other application components, following ATT&CK framework principles for defensive measures against web-based attack vectors.