CVE-2015-7368 in Adserver
Summary
by MITRE
Revive Adserver before 3.2.2 does not send the appropriate Cache-Control HTTP headers in responses for admin UI pages, which allows local users to obtain sensitive information via the web browser cache.
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Analysis
by VulDB Data Team • 06/21/2022
The vulnerability identified as CVE-2015-7368 affects Revive Adserver versions prior to 3.2.2 and represents a critical security flaw in the web application's handling of HTTP response headers. This issue stems from the application's failure to implement proper Cache-Control mechanisms for administrative user interface pages, creating an exploitable condition that can lead to information disclosure. The vulnerability specifically targets the admin UI components where sensitive operational data and configuration details are exposed, making it particularly dangerous for systems that rely on centralized advertising management platforms.
The technical root cause of this vulnerability lies in the absence of essential Cache-Control HTTP headers in responses generated by the admin interface pages. When web browsers receive HTTP responses without proper cache directives, they may store content in local browser caches, memory, or temporary storage locations. This behavior creates a persistent exposure where cached content containing sensitive administrative information remains accessible to subsequent users who might access the same browser session or where cached data could be retrieved through various means. The flaw manifests as a failure to implement the Cache-Control: no-cache, no-store, and must-revalidate directives that are standard practices for protecting sensitive content in web applications.
The operational impact of this vulnerability extends beyond simple information disclosure, as it creates potential attack vectors for local adversaries who can leverage browser caching mechanisms to access sensitive administrative data. Attackers who gain access to a victim's browser session or who can access the same system where cached content was stored can retrieve previously accessed administrative pages containing configuration details, user credentials, campaign data, and other sensitive operational information. This exposure can compromise the confidentiality of the advertising platform and potentially provide attackers with insights into campaign strategies, target audience data, and system configurations that could be used for further exploitation or targeted attacks. The vulnerability is particularly concerning in environments where multiple users share the same computing resources or where administrative access is not properly secured.
Security practitioners should note that this vulnerability aligns with CWE-200, which addresses "Information Exposure," and represents a specific instance of inadequate access control mechanisms in web applications. The flaw also intersects with ATT&CK technique T1566, which covers "Phishing" through the potential for attackers to gather sensitive information that could be used in social engineering attacks. Organizations should implement immediate mitigations including updating to Revive Adserver version 3.2.2 or later, implementing proper Cache-Control headers for all administrative pages, and conducting thorough security reviews of web application response headers. Additionally, security teams should consider implementing browser security policies that enforce stricter cache management and regularly audit web application configurations to ensure proper header implementation across all sensitive interfaces. The vulnerability underscores the importance of following security best practices for HTTP header management and demonstrates how seemingly minor configuration oversights can create significant exposure risks in web-based systems.