CVE-2022-23099 in OX App Suite
Summary
by MITRE • 07/27/2022
OX App Suite through 7.10.6 allows XSS by forcing block-wise read.
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Analysis
by VulDB Data Team • 08/28/2022
The vulnerability CVE-2022-23099 represents a cross-site scripting flaw discovered in OX App Suite version 7.10.6 and earlier. This security weakness specifically manifests when the application forces block-wise read operations, creating an opportunity for malicious actors to inject arbitrary JavaScript code into the application's user interface. The vulnerability stems from insufficient input validation and output encoding mechanisms within the application's handling of data blocks during read operations. When users encounter content processed through this flawed mechanism, the malicious scripts can execute within the context of other users' sessions, potentially leading to unauthorized access to sensitive information or system compromise.
The technical exploitation of this vulnerability occurs through the manipulation of data blocks that the application processes during read operations. Attackers can craft specially formatted input that, when processed by the application's block-wise read functionality, gets rendered without proper sanitization. This creates a persistent XSS vector where malicious JavaScript code becomes embedded in the application's response to legitimate users. The vulnerability operates at the application layer and specifically targets the user interface rendering components that handle block-based data processing. The flaw can be categorized under CWE-79 as a failure to sanitize or encode user-controllable data before it is used in an output context, making it a classic cross-site scripting vulnerability.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to steal session cookies, perform actions on behalf of authenticated users, or redirect victims to malicious websites. In the context of OX App Suite, which serves as a comprehensive email and collaboration platform, successful exploitation could lead to unauthorized access to email accounts, calendar data, contact information, and other sensitive business communications. The vulnerability affects all users who interact with the application's block-wise read functionality, potentially compromising the entire user base if the application is widely deployed. This makes the impact particularly severe for organizations relying on the platform for critical business operations.
Organizations should implement immediate mitigations including input validation and output encoding improvements, particularly focusing on the block-wise read functionality within the application. The recommended approach involves sanitizing all user-controllable data before processing and ensuring proper HTML encoding of output content to prevent script injection. Additionally, implementing content security policies can provide an additional layer of protection against XSS attacks by restricting script execution within the application's context. Regular security updates and patch management procedures should be prioritized to address this vulnerability, with security teams monitoring for similar patterns in other application components. The ATT&CK framework categorizes this vulnerability under T1566 as a credential access technique, emphasizing the potential for session hijacking and unauthorized system access through successful XSS exploitation.