Horizon Alert
Summary of the vulnerability and why it matters
The Apache HTTP Server, specifically the mod_proxy component, is affected by a flaw that allows a remote user to control the destination server for forwarded requests. This can lead to unauthorized access or redirection of network traffic. The potential impact includes disruption of services, data exposure, and unauthorized system access.
- Vulnerable: Apache HTTP Server mod_proxy
- Flaw: Uncontrolled request forwarding
- Impact: Unauthorized access, data exposure
Attack Path
How an attacker could exploit the issue
The Apache HTTP Server is susceptible to an attack where a specially crafted request can cause the `mod_proxy` module to direct traffic to an attacker-chosen origin server. This could allow an attacker to bypass security controls and access internal resources. The exploitation of this vulnerability could lead to unauthorized access to sensitive data or systems.
- Publicly accessible Apache server.
- Attacker sends a malicious request.
- Proxy forwards request to unintended server.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability presents a critical risk due to its potential for exploitation by attackers with moderate skill. The issue allows attackers to manipulate requests, potentially directing them to unintended servers. This could lead to unauthorized access to sensitive internal systems or data exposure.
- Attackers need moderate skill.
- No special access is required.
- Business risk is urgent.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
An organization should take immediate action regarding a critical vulnerability in the Apache HTTP Server. This vulnerability allows remote users to forward requests to an origin server of their choosing, posing a significant risk to business operations and data. The Apache HTTP Server is a widely used component, making its exposure a common concern.
- Identify exposed Apache HTTP Server instances.
- Restrict proxy functionality where possible.
- Apply vendor fixes and validate.
- Monitor for related activity.
