Horizon Alert
Summary of the vulnerability and why it matters
A critical security vulnerability has been identified in Progress MarkLogic Server's HTTP App Server, which could allow unauthenticated attackers to bypass security controls, hijack user sessions, or steal credentials. This issue arises from how the server handles specific HTTP request headers, potentially leading to security breaches if not addressed.
- Attackers could bypass security checks.
- It enables session hijacking and credential theft.
- Confirm relevance and assess potential exposure.
Attack Path
How an attacker could exploit the issue
A remote attacker can exploit this vulnerability by sending specially crafted HTTP requests that trick a reverse proxy and the MarkLogic Server into processing them incorrectly. This misinterpretation can allow the attacker to bypass security measures, potentially taking over a user's session or stealing credentials.
- Requires network access.
- Triggered by malformed HTTP requests.
- Risk of unauthorized access and data theft.
Live Threat
Current exploitation, exposure, and threat context
When supported by the advisory, a crafted HTTP request can cause a reverse proxy and MarkLogic Server to misinterpret request boundaries due to differing handling of Content-Length and Transfer-Encoding headers. This could allow an attacker to bypass authentication and authorization controls, hijack user sessions, or steal credentials.
- Authentication and session data at risk.
- Different request interpretation by proxy.
- Unauthorized access and credential theft.
Operational Fix
Recommended remediation, mitigation, and detection steps
The Progress MarkLogic Server HTTP App Server is likely managed by platform or infrastructure teams responsible for core application services, with application owners needing to confirm specific deployments and business criticality. The first step involves identifying all instances of the affected server, assessing their reachability and business impact, and then coordinating with vendor management for the appropriate fix.
- Platform and application teams own the issue.
- Verify external reachability and business impact.
- Coordinate with vendor for remediation.
