CVE-2024-31395 in A-Blog CMS
Summary
by MITRE • 05/22/2024
Cross-site scripting vulnerability exists in a-blog cms Ver.3.1.x series versions prior to Ver.3.1.12, Ver.3.0.x series versions prior to Ver.3.0.32, Ver.2.11.x series versions prior to Ver.2.11.61, Ver.2.10.x series versions prior to Ver.2.10.53, and Ver.2.9 and earlier versions. If this vulnerability is exploited, a user with an editor or higher privilege who can log in to the product may execute an arbitrary script on the web browser of the user who accessed the schedule management page.
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Analysis
by VulDB Data Team • 03/28/2025
This cross-site scripting vulnerability affects multiple versions of a-blog cms across different series, representing a significant security risk for organizations relying on this content management system. The flaw exists specifically within the schedule management page functionality, where user input is not properly sanitized or validated before being rendered in web browsers. The vulnerability is particularly concerning because it requires only an editor-level privilege to exploit, meaning that users with moderate access rights can potentially compromise the security of other users who access the affected pages. This type of vulnerability falls under CWE-79 which specifically addresses cross-site scripting flaws in web applications.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding mechanisms within the cms's schedule management component. When editors input data into schedule-related fields, the system fails to properly escape or filter special characters that could be interpreted as executable script code by web browsers. Attackers can craft malicious payloads that, when processed by the cms, get embedded into the page content and subsequently executed in the browsers of other users who view the schedule management interface. This exploitation vector operates through the standard XSS attack pattern where malicious script code is injected into web applications and executed in the context of the victim's browser session.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform various malicious activities including session hijacking, credential theft, data exfiltration, and privilege escalation within the cms environment. Since the vulnerability affects multiple versions across different series, organizations running any of these outdated cms versions face immediate risk of exploitation. The attack surface is further expanded by the fact that the vulnerability can be exploited by users with editor privileges, which typically includes content creators, administrators, and other trusted users who may have legitimate access to the system. This makes the vulnerability particularly dangerous in environments where multiple users with varying privilege levels interact with the cms, as a single compromised account can serve as a foothold for broader attacks.
Organizations should immediately implement comprehensive patch management strategies to upgrade all affected cms installations to their respective secure versions, specifically targeting the minimum required versions mentioned in the vulnerability disclosure. The remediation process should include thorough testing of the patched versions to ensure that existing functionality remains intact while addressing the XSS vulnerability. Additional mitigations should include implementing robust input validation and output encoding mechanisms, establishing proper privilege segregation to limit editor access to sensitive areas, and deploying web application firewalls to detect and block suspicious script injection attempts. Organizations should also consider implementing content security policies to further restrict script execution within the cms environment, aligning with defense-in-depth strategies recommended by the mitre ATT&CK framework for web application security. Regular security assessments and vulnerability scanning should be conducted to identify similar issues in other components of the cms ecosystem and ensure ongoing protection against similar exploitation vectors.