| Título | java-json-tools jackson-coreutils 2.0 BigDecimal Amplification DoS |
|---|
| Descripción | 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. |
|---|
| Fuente | ⚠️ https://github.com/java-json-tools/jackson-coreutils/issues/65 |
|---|
| Usuario | York Shen - Yong Shen - PayPal Cyber Security Team (UID 100171) |
|---|
| Sumisión | 2026-07-29 06:46 (hace 1 mes) |
|---|
| Moderación | 2026-09-07 20:54 (1 month later) |
|---|
| Estado | Aceptado |
|---|
| Entrada de VulDB | 399664 [java-json-tools jackson-coreutils 2.0 JacksonUtils.java BigDecimal.toPlainString denegación de servicio] |
|---|
| Puntos | 20 |
|---|