| タイトル | PublicCMS V6.202506.d Improper Handling of Highly Compressed Data (Data Amplification) |
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| 説明 | PublicCMS (up to version [V6.202506.d]) is vulnerable to a Denial of Service (DoS) attack via a "ZIP Bomb" during document processing. In common/src/main/java/com/publiccms/common/tools/DocToHtmlUtils.java at line 94, the application explicitly disables the security threshold for compressed data expansion by calling ZipSecureFile.setMinInflateRatio(0), which bypasses the default protection of the Apache POI library. This vulnerable conversion logic is reachable via the administrative file import interface (docx/xlsx/ppt/pptx) defined in core/src/main/java/com/publiccms/controller/admin/sys/FileAdminController.java at lines 171-176 and 191-230. An authenticated attacker can upload a specially crafted malicious compressed document, triggering extreme CPU and memory consumption that leads to server instability or a complete crash. |
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| ユーザー | LeyNn3H (UID 97009) |
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| 送信 | 2026年04月01日 18:42 (21 日 ago) |
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| モデレーション | 2026年04月21日 16:35 (20 days later) |
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| ステータス | 承諾済み |
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| VulDBエントリ | 358491 [Sanluan PublicCMS 迄 6.202506.d DocToHtmlUtils.java ZipSecureFile.setMinflateRatio サービス拒否] |
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| ポイント | 17 |
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