CWE-773

アクティブなファイル記述子またはハンドルへの参照がない

Missing Reference to Active File Descriptor or Handle

脆弱性作成中

日本語説明

この製品は、ファイル記述子またはハンドルへの参照を適切に保持していないため、そのファイル記述子/ハンドルが再要求されない。

このため、製品が利用可能なファイル記述子やハンドルをすべて消費してしまい、他のプロセスが重要なファイル処理操作を実行できなくなる可能性がある。

原文 (English)

The product does not properly maintain references to a file descriptor or handle, which prevents that file descriptor/handle from being reclaimed.

This can cause the product to consume all available file descriptors or handles, which can prevent other processes from performing critical file processing operations.

関連する脆弱性

想定される影響

Scope: Availability / Impact: DoS: Resource Consumption (Other)

対策・緩和策

Use resource-limiting settings provided by the operating system or environment. For example, when managing system resources in POSIX, setrlimit() can be used to set limits for certain types of resources, and getrlimit() can determine how many resources are available. However, these functions are not available on all operating systems.

When the current levels get close to the maximum that is defined for the application (see CWE-770), then limit the allocation of further resources to privileged users; alternately, begin releasing resources for less-privileged users. While this mitigation may protect the system from attack, it will not necessarily stop attackers from adversely impacting other users.

Ensure that the application performs the appropriate error checks and error handling in case resources become unavailable (CWE-703).

外部リンク

MITRE公式ページ — CWE-773