Gửi #908322: java-json-tools jackson-coreutils 2.0 BigDecimal Amplification DoSthông tin

tiêu đềjava-json-tools jackson-coreutils 2.0 BigDecimal Amplification DoS
Mô tảBigDecimal 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.
Nguồn⚠️ https://github.com/java-json-tools/jackson-coreutils/issues/65
Người dùng
 York Shen - Yong Shen - PayPal Cyber Security Team (UID 100171)
Đệ trình29/07/2026 06:46 (cách đây 3 các tháng)
Kiểm duyệt07/09/2026 20:54 (1 month later)
Trạng tháiđược chấp nhận
Mục VulDB399664 [java-json-tools jackson-coreutils 2.0 JacksonUtils.java BigDecimal.toPlainString Từ chối dịch vụ]
điểm20

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