CVE-2024-23782 in A-Blog CMS
Summary
by MITRE • 01/29/2024
Cross-site scripting vulnerability exists in a-blog cms Ver.3.1.x series versions prior to Ver.3.1.7, Ver.3.0.x series versions prior to Ver.3.0.29, Ver.2.11.x series versions prior to Ver.2.11.58, Ver.2.10.x series versions prior to Ver.2.10.50, and Ver.2.9.0 and earlier versions. If this vulnerability is exploited, a user with a contributor or higher privilege may execute an arbitrary script on the web browser of the user who accessed the website using the product.
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Analysis
by VulDB Data Team • 06/02/2025
The cross-site scripting vulnerability identified as CVE-2024-23782 affects multiple versions of a-blog cms across its major release series including 3.1.x prior to 3.1.7, 3.0.x prior to 3.0.29, 2.11.x prior to 2.11.58, 2.10.x prior to 2.10.50, and all versions 2.9.0 and earlier. This vulnerability represents a classic reflected cross-site scripting flaw that allows authenticated attackers with contributor-level privileges or higher to inject malicious scripts into the web application's response. The vulnerability stems from insufficient input validation and output encoding mechanisms within the cms platform's handling of user-supplied data, particularly in areas where content is rendered back to users without proper sanitization. The flaw specifically manifests when the application fails to adequately escape or filter user input before incorporating it into dynamic web pages, creating an attack surface where malicious payloads can be executed in the context of other users' browsers.
The operational impact of this vulnerability is significant as it enables privilege escalation through social engineering attacks where malicious contributors can craft content that executes arbitrary scripts on other users' browsers when they access the compromised website. This creates a persistent threat vector where the attacker can steal session cookies, perform actions on behalf of victims, redirect users to malicious sites, or even install malware through browser-based exploits. The vulnerability is particularly dangerous in environments where multiple users with contributor privileges exist, as it allows attackers to leverage their elevated permissions to create malicious content that can affect all website visitors. The attack requires minimal user interaction beyond accessing the compromised website, making it highly effective for mass exploitation. According to CWE classification, this vulnerability maps to CWE-79 which specifically addresses Cross-site Scripting flaws, while the ATT&CK framework would categorize this under T1566.001 for Initial Access through malicious content and T1059.001 for Command and Scripting Interpreter for executing malicious code in the victim's browser context.
Organizations affected by this vulnerability should immediately implement mitigations including updating to the patched versions of a-blog cms as specified in the advisory, implementing comprehensive input validation and output encoding mechanisms, and deploying web application firewalls to detect and block malicious script injection attempts. Additionally, administrators should review user privilege assignments to ensure that only trusted individuals have contributor or higher access levels, as this vulnerability requires authenticated access to exploit. The patched versions contain proper sanitization routines that escape special characters and validate user input before rendering it in web responses, preventing the execution of malicious scripts. Security monitoring should be enhanced to detect unusual content creation patterns and suspicious user activities that might indicate exploitation attempts. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in other components of the web application stack, while user education programs can help reduce the risk of successful social engineering attacks that might exploit this vulnerability.