Summary
AVideo versions before 8.1.0 expose encoder control, status, queue, and file-listing endpoints to anonymous network callers without a consistent authentication layer. An attacker may trigger privileged processing, retrieve operational information, and enumerate media file names and paths that are readable by the web-server account.
AVideo versions before 8.1.0 expose encoder control, status, queue, and file-listing endpoints to anonymous network callers without a consistent authentication layer. An attacker may trigger privileged processing, retrieve operational information, and enumerate media file names and paths that are readable by the web-server account.
Affected context
The issue occurs in AVideo encoder deployments where PHP endpoints under the encoder's view directory are network accessible without a global authentication check. Risk is increased when default or permissive bulk-encoding settings remain enabled, when the web server can read broad filesystem locations, or when status and queue endpoints are exposed beyond trusted administrative clients.
The issue occurs in AVideo encoder deployments where PHP endpoints under the encoder's view directory are network accessible without a global authentication check. Risk is increased when default or permissive bulk-encoding settings remain enabled, when the web server can read broad filesystem locations, or when status and queue endpoints are exposed beyond trusted administrative clients.
Exploit preconditions
- Attack surface: Network-accessible AVideo encoder PHP endpoints
- Required access: No authenticated account may be required when the affected endpoints are exposed
- Trigger points: Encoder run, queue, status, and file-listing requests
- Relevant conditions: Authentication guards are absent or disabled, and bulk-encoding authorization permits anonymous access
- Why exploitation is possible: Sensitive operations and filesystem enumeration are reachable before a consistent identity and authorization decision is enforced
- Attack surface: Network-accessible AVideo encoder PHP endpoints
- Required access: No authenticated account may be required when the affected endpoints are exposed
- Trigger points: Encoder run, queue, status, and file-listing requests
- Relevant conditions: Authentication guards are absent or disabled, and bulk-encoding authorization permits anonymous access
- Why exploitation is possible: Sensitive operations and filesystem enumeration are reachable before a consistent identity and authorization decision is enforced
Why this happens
The underlying defect is inconsistent or missing access control around privileged encoder functionality. Some endpoints invoke processing or return operational data without enforcing authentication, while the file-listing path relies on a permissive capability check and does not constrain resolved paths to an approved media directory. This maps primarily to CWE-306, Missing Authentication for Critical Function, and also relates to CWE-862, Missing Authorization.
The underlying defect is inconsistent or missing access control around privileged encoder functionality. Some endpoints invoke processing or return operational data without enforcing authentication, while the file-listing path relies on a permissive capability check and does not constrain resolved paths to an approved media directory. This maps primarily to CWE-306, Missing Authentication for Critical Function, and also relates to CWE-862, Missing Authorization.
Potential impact
- An unauthenticated caller may trigger or influence encoder queue processing
- Queue contents and streamer-site URLs may be disclosed
- Host memory statistics and other operational details may be exposed
- Media file names and paths in readable directories may be enumerated
- The exposed information could support follow-on attacks or privacy violations
- Resource-intensive processing may affect service availability
- An unauthenticated caller may trigger or influence encoder queue processing
- Queue contents and streamer-site URLs may be disclosed
- Host memory statistics and other operational details may be exposed
- Media file names and paths in readable directories may be enumerated
- The exposed information could support follow-on attacks or privacy violations
- Resource-intensive processing may affect service availability
General mitigation guidance
Mitigation generally centers on enforcing authentication and authorization at a
shared boundary for every encoder control, status, queue, and file-access endpoint.
Common defensive patterns include:
- Require authenticated, authorized administrative identities for privileged encoder actions
- Apply deny-by-default authorization independently at each endpoint and capability
- Treat configuration flags as restrictions, not substitutes for identity-based access control
- Restrict file-listing operations to an explicitly approved media root and reject path traversal or out-of-scope resolutions
- Minimize information returned by status and queue APIs
- Avoid wildcard cross-origin access for sensitive endpoints
- Run the web server with least-privilege filesystem and process permissions
- Place administrative encoder interfaces behind a trusted network boundary where practical
Mitigation generally centers on enforcing authentication and authorization at a
shared boundary for every encoder control, status, queue, and file-access endpoint.
Common defensive patterns include:
- Require authenticated, authorized administrative identities for privileged encoder actions
- Apply deny-by-default authorization independently at each endpoint and capability
- Treat configuration flags as restrictions, not substitutes for identity-based access control
- Restrict file-listing operations to an explicitly approved media root and reject path traversal or out-of-scope resolutions
- Minimize information returned by status and queue APIs
- Avoid wildcard cross-origin access for sensitive endpoints
- Run the web server with least-privilege filesystem and process permissions
- Place administrative encoder interfaces behind a trusted network boundary where practical
How teams detect issues like this
Organizations can assess this issue through:
- Static analysis for endpoint handlers that invoke privileged operations without a shared authentication or authorization check
- Code review searches for commented-out guards, anonymous capability checks, and unrestricted use of realpath() or scandir()
- Dynamic testing that sends unauthenticated requests to encoder control, queue, status, and file-listing routes
- Access-control tests verifying that authenticated users without the required capability are also denied
- Web-server and application-log monitoring for anonymous requests, unusual queue activity, status scraping, and directory enumeration
- Policy enforcement requiring deny-by-default access controls and approved filesystem roots for administrative APIs
Organizations can assess this issue through:
- Static analysis for endpoint handlers that invoke privileged operations without a shared authentication or authorization check
- Code review searches for commented-out guards, anonymous capability checks, and unrestricted use of realpath() or scandir()
- Dynamic testing that sends unauthenticated requests to encoder control, queue, status, and file-listing routes
- Access-control tests verifying that authenticated users without the required capability are also denied
- Web-server and application-log monitoring for anonymous requests, unusual queue activity, status scraping, and directory enumeration
- Policy enforcement requiring deny-by-default access controls and approved filesystem roots for administrative APIs
