CVE-2022-3941 in Activity Log Plugin
Summary
by MITRE • 11/11/2022
A vulnerability has been found in Activity Log Plugin and classified as critical. This vulnerability affects unknown code of the component HTTP Header Handler. The manipulation of the argument X-Forwarded-For leads to improper output neutralization for logs. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-213448.
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Analysis
by VulDB Data Team • 12/17/2022
The vulnerability identified as CVE-2022-3941 represents a critical security flaw within the Activity Log Plugin, specifically impacting the HTTP Header Handler component. This issue stems from improper handling of the X-Forwarded-For HTTP header, which is commonly used to identify the original IP address of a client connecting through a proxy or load balancer. The vulnerability falls under the category of improper output neutralization for logs, a weakness that allows attackers to manipulate log entries through crafted header values. The X-Forwarded-For header manipulation creates a scenario where malicious input can be injected into system logs, potentially leading to log injection attacks that compromise the integrity and reliability of audit trails.
The technical exploitation of this vulnerability occurs through remote manipulation of the X-Forwarded-For HTTP header parameter. When the Activity Log Plugin processes incoming requests, it fails to properly sanitize or neutralize the values provided in this header before logging them to system records. This improper output neutralization creates a vector for attackers to inject malicious content into log files, potentially enabling log poisoning attacks that can obscure legitimate activities or facilitate further exploitation. The vulnerability's classification as critical indicates the severe impact this flaw can have on system security and audit capabilities, as compromised logs undermine the foundation of security monitoring and incident response procedures.
From an operational perspective, the impact of this vulnerability extends beyond simple log manipulation to potentially compromise the entire security infrastructure that relies on accurate logging. Attackers can exploit this weakness to hide their malicious activities within legitimate-looking log entries, making detection significantly more difficult. The public disclosure of this exploit means that threat actors can readily leverage this vulnerability without requiring advanced technical skills, turning what might otherwise be a complex attack into a straightforward exploitation technique. This exposure creates immediate risks for organizations using the affected plugin, as their security logs become unreliable and potentially compromised.
The vulnerability aligns with CWE-117, which specifically addresses improper output neutralization for logs, and demonstrates characteristics consistent with ATT&CK technique T1562.006 for "Impair Command History Logging" and T1070.002 for "Clear Log". Organizations should immediately implement mitigations including updating to patched versions of the Activity Log Plugin, implementing strict input validation for HTTP headers, and configuring proper log sanitization procedures. Additionally, security teams should conduct comprehensive log reviews to identify any potential exploitation attempts and consider implementing additional monitoring for suspicious header values. The disclosure status of this vulnerability necessitates immediate action to prevent exploitation while also reinforcing the importance of proper input validation and output sanitization practices in web application security.