| パッケージ | 影響を受けるバージョン | 修正済みバージョン |
|---|---|---|
| elasticsearch | ≥ 8.0.0, < 8.19.20≥ 9.0.0, < 9.4.5 | 8.19.209.4.5 |
Uncontrolled Recursion (CWE-674) in the Elasticsearch wildcard matching helper can lead to a denial of service via Excessive Allocation (CAPEC-130). The matcher used to resolve wildcard patterns against names is implemented recursively and had no bound on recursion depth or on the total number of match operations performed. A search request containing a wildcard pattern with a large number of wildcard groups, evaluated against a sufficiently long name, exhausts the thread stack. Elasticsearch treats a stack overflow as an unrecoverable condition and shuts the node down, so the request terminates the affected node rather than failing gracefully.
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