CVE-2024-20928 Overview
CVE-2024-20928 affects the Content Server component of Oracle WebCenter Content, part of Oracle Fusion Middleware. The supported affected release is version 12.2.1.4.0. An unauthenticated attacker with network access over HTTP can exploit this flaw, provided a user other than the attacker performs an interaction (such as clicking a crafted link). Because the vulnerability enables a scope change, successful exploitation may impact components beyond Oracle WebCenter Content itself. Consequences include unauthorized update, insert, or delete operations on a subset of accessible data, along with read access to a subset of accessible data.
Critical Impact
Remote, unauthenticated attackers can compromise data integrity and confidentiality in Oracle WebCenter Content when a targeted user is tricked into interacting with attacker-supplied content, with impact potentially extending to adjacent products through scope change.
Affected Products
- Oracle WebCenter Content 12.2.1.4.0
- Oracle Fusion Middleware (Content Server component)
- Deployments exposing WebCenter Content over HTTP to untrusted networks
Discovery Timeline
- 2024-01-16 - CVE-2024-20928 published to NVD
- January 2024 - Oracle addresses the issue in the Critical Patch Update Advisory
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-20928
Vulnerability Analysis
The vulnerability resides in the Content Server component of Oracle WebCenter Content. Oracle's advisory classifies it as easily exploitable over the network via HTTP without authentication, but exploitation requires user interaction from a party other than the attacker. This interaction requirement, combined with the changed scope (S:C), is consistent with client-side attack patterns such as reflected input handling issues in a web interface that can pivot into other trusted contexts.
Successful exploitation grants attackers partial write access, allowing them to update, insert, or delete a subset of data accessible to WebCenter Content. It also yields partial read access to a subset of that data. Availability is not affected. The scope change signals that damage may extend beyond WebCenter Content into components that trust its output or session context.
Root Cause
Oracle has not published low-level technical details. NVD lists the weakness as NVD-CWE-noinfo, meaning no specific CWE category has been assigned. The behavioral profile—network attack vector, no privileges, required user interaction, and cross-scope impact—aligns with an input handling weakness in a web-facing endpoint of the Content Server.
Attack Vector
An unauthenticated attacker delivers a crafted HTTP request or URL to a user with access to Oracle WebCenter Content. When the victim interacts with the payload, the Content Server processes it in a way that permits limited modification and disclosure of WebCenter Content data and may affect other in-scope components. No exploit code is publicly listed, and the vulnerability is not present on the CISA Known Exploited Vulnerabilities catalog.
See the Oracle Critical Patch Update January 2024 for vendor-provided context and patch mapping.
Detection Methods for CVE-2024-20928
Indicators of Compromise
- Unexpected HTTP requests to Content Server endpoints containing encoded scripts, unusual query parameters, or references to external domains.
- WebCenter Content audit log entries showing unauthorized create, update, or delete operations against documents or metadata.
- Referer headers on WebCenter requests pointing to unfamiliar external sites, indicating potential lure pages targeting internal users.
Detection Strategies
- Inspect WebCenter Content and reverse proxy access logs for anomalous parameter patterns and encoded payloads directed at Content Server URLs.
- Correlate authenticated WebCenter sessions with abnormal document modification bursts occurring shortly after users follow external links.
- Deploy web application firewall (WAF) rules tuned to Oracle Fusion Middleware URL structures to flag suspicious inputs.
Monitoring Recommendations
- Forward WebCenter Content and WebLogic access logs to a centralized SIEM for retention and correlation.
- Alert on privilege-relevant Content Server operations initiated from unexpected source IP ranges or geolocations.
- Monitor outbound network calls from user browsers to WebCenter Content that follow interactions with external URLs.
How to Mitigate CVE-2024-20928
Immediate Actions Required
- Apply the fixes distributed in the Oracle Critical Patch Update January 2024 to all Oracle WebCenter Content 12.2.1.4.0 deployments.
- Inventory Oracle Fusion Middleware assets to confirm patch coverage across production, staging, and disaster recovery environments.
- Restrict Content Server exposure to trusted networks and require VPN or zero trust access for administrative interfaces.
Patch Information
Oracle published the fix as part of the January 2024 Critical Patch Update. Administrators must download the corresponding patch bundle for Oracle WebCenter Content 12.2.1.4.0 from My Oracle Support and follow the vendor's installation procedure, including any prerequisite Fusion Middleware patches and post-installation validation steps described in the advisory.
Workarounds
- Place Oracle WebCenter Content behind a WAF that filters unexpected parameters and blocks known cross-site scripting patterns targeting Fusion Middleware URLs.
- Enforce strict Content Security Policy (CSP) headers on WebCenter responses to limit the execution context of any injected content.
- Educate WebCenter users to avoid clicking WebCenter links from untrusted sources until patches are applied.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
