1. Threat: Excessive Shimmer Instance Creation (DoS)
- Description: An attacker attempts to trigger the creation of a very large number of Shimmer instances simultaneously. This could be achieved if the application dynamically creates Shimmer instances based on user input (which it should not do). This directly leverages the Shimmer library's instantiation mechanism.
- Impact:
- Performance Degradation: Slows down the application significantly, potentially making it unusable.
- Resource Exhaustion (Client-Side): Could consume excessive CPU or GPU resources on the user's device, leading to browser crashes or freezes in extreme cases. This directly impacts the user's device.
- Affected Shimmer Component: The code responsible for creating and managing Shimmer instances. This would depend on how Shimmer is integrated into the application, but it would likely involve the main Shimmer component (e.g.,
Shimmer,ShimmerFrameLayout) and any surrounding logic that controls its instantiation. This is a direct interaction with the library's core functionality. - Risk Severity: High (Due to the archived nature of the library. If it were maintained, this would be Medium).
- Mitigation Strategies:
- Strict Instance Control: Do not allow user input to directly control the number or complexity of Shimmer instances. This is the most crucial mitigation.
- Rate Limiting (Indirect): If Shimmer instances are created in response to user actions (e.g., scrolling), implement rate limiting to prevent an attacker from triggering a flood of requests.
- Lazy Loading: Only initialize Shimmer effects when the corresponding elements are about to become visible in the viewport.
- Limit Total Instances: Enforce a hard limit on the maximum number of Shimmer instances that can be active at any given time.