Horizon Alert
Summary of the vulnerability and why it matters
A vulnerability in Apache Allura, an open-source platform for hosting development projects, allows for a request replay attack. This could potentially impact the confidentiality and integrity of data handled by the application. The primary concern is confirming whether our deployed instances of Apache Allura are affected and to what extent.
- Replay attack affects project hosting software.
- Confirms if our project hosting software is vulnerable.
- Assess exposure and take appropriate action.
Attack Path
How an attacker could exploit the issue
An attacker could exploit this vulnerability by replaying an OAuth1 request. This allows them to impersonate a legitimate user and gain unauthorized access to their account. The vulnerability exists in how Apache Allura handles OAuth1 requests, specifically allowing for replay attacks. Successful exploitation could lead to sensitive information disclosure and unauthorized modifications.
- No special access needed to start.
- Replay an OAuth1 request.
- Unauthorized access and data compromise.
Live Threat
Current exploitation, exposure, and threat context
A replay attack could allow an attacker to impersonate a user when accessing services. This is possible because the authentication mechanism does not adequately protect against replaying captured authentication requests.
- User session data.
- Replaying intercepted requests.
- Unauthorized access to user accounts.
Operational Fix
Recommended remediation, mitigation, and detection steps
Teams responsible for Apache Allura, likely application or platform owners, should first identify all instances of the affected technology. Confirming reachability and business criticality will help prioritize remediation efforts and engage the accountable owner to plan a controlled update.
- Confirm Allura instance inventory.
- Verify external accessibility and criticality.
- Plan upgrade during maintenance window.
