CVE-2022-4848 in memos
Summary
by MITRE • 12/29/2022
Improper Verification of Source of a Communication Channel in GitHub repository usememos/memos prior to 0.9.1.
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Analysis
by VulDB Data Team • 01/26/2023
The vulnerability identified as CVE-2022-4848 represents a critical flaw in the authentication and communication channel verification mechanisms within the usememos/memos repository prior to version 0.9.1. This issue stems from inadequate validation of the source authenticity for communication channels, creating potential security risks that could be exploited by malicious actors. The vulnerability affects the core communication infrastructure of the application, specifically targeting how the system validates and authenticates incoming connections and data sources.
This flaw manifests as a failure to properly verify the origin and legitimacy of communication channels, allowing unauthorized entities to potentially establish connections or inject malicious data into the system. The technical implementation appears to lack robust source verification mechanisms that would normally validate the identity and integrity of communication endpoints. This weakness falls under the broader category of insufficient verification of communication sources, which is classified as CWE-284 in the Common Weakness Enumeration catalog. The vulnerability essentially permits a man-in-the-middle attack vector where attackers can impersonate legitimate communication sources.
The operational impact of this vulnerability extends beyond simple authentication failures, potentially enabling attackers to gain unauthorized access to sensitive data, manipulate communication flows, or establish persistent backdoors within the system. In the context of a memo management system, this could result in unauthorized access to confidential information, data exfiltration, or the injection of malicious content that could affect other users within the platform. The vulnerability's exploitation could compromise the integrity and confidentiality of all communication channels within the application, affecting both internal and external data exchanges.
Organizations utilizing the affected versions of memos should immediately implement mitigations including updating to version 0.9.1 or later, which contains the necessary fixes for this communication channel verification issue. Additionally, network segmentation and monitoring should be enhanced to detect anomalous communication patterns that might indicate exploitation attempts. The ATT&CK framework categorizes this type of vulnerability under T1071.004 for Application Layer Protocol: DNS, as it involves communication protocol manipulation and source verification failures that could enable attackers to establish unauthorized communication channels. Security teams should also consider implementing additional authentication layers and connection validation mechanisms to prevent exploitation of this weakness.