| 제목 | java-json-tools jackson-coreutils 2.0 BigDecimal Amplification DoS |
|---|
| 설명 | 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. |
|---|
| 원천 | ⚠️ https://github.com/java-json-tools/jackson-coreutils/issues/65 |
|---|
| 사용자 | York Shen - Yong Shen - PayPal Cyber Security Team (UID 100171) |
|---|
| 제출 | 2026. 07. 29. AM 06:46 (2 개월 ago) |
|---|
| 모더레이션 | 2026. 09. 07. PM 08:54 (1 month later) |
|---|
| 상태 | 수락 |
|---|
| VulDB 항목 | 399664 [java-json-tools jackson-coreutils 2.0 JacksonUtils.java BigDecimal.toPlainString 서비스 거부] |
|---|
| 포인트들 | 20 |
|---|