| 标题 | java-json-tools jackson-coreutils 2.0 BigDecimal Amplification DoS |
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| 描述 | BigDecimal Amplification DoS via Default WRITE_BIGDECIMAL_AS_PLAIN Configuration
The library's default ObjectMapper configuration enables both USE_BIG_DECIMAL_FOR_FLOATS and WRITE_BIGDECIMAL_AS_PLAIN. When any application parses untrusted JSON containing large-exponent numbers (e.g., 1e100000) through this library's mapper and later serializes the result, BigDecimal.toPlainString() allocates a string proportional to the exponent value — causing massive memory amplification and OutOfMemoryError.
This vulnerability does NOT require SSRF. Any direct JSON input (HTTP request body, uploaded file, message queue payload) triggers it. |
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| 来源 | ⚠️ https://github.com/java-json-tools/jackson-coreutils/issues/65 |
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| 用户 | York Shen - Yong Shen - PayPal Cyber Security Team (UID 100171) |
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| 提交 | 2026-07-29 06時46分 (1 月前) |
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| 管理 | 2026-09-07 20時54分 (1 month later) |
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| 状态 | 已接受 |
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| VulDB条目 | 399664 [java-json-tools jackson-coreutils 2.0 JacksonUtils.java BigDecimal.toPlainString 拒绝服务] |
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| 积分 | 20 |
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