CVE-2021-37714

jsoup is a Java library for working with HTML. Those using jsoup versions prior to 1.14.2 to parse untrusted HTML or XML may be vulnerable to DOS attacks. If the parser is run on user supplied input, an attacker may supply content that causes the parser to get stuck (loop indefinitely until cancelled), to complete more slowly than usual, or to throw an unexpected exception. This effect may support a denial of service attack. The issue is patched in version 1.14.2. There are a few available workarounds. Users may rate limit input parsing, limit the size of inputs based on system resources, and/or implement thread watchdogs to cap and timeout parse runtimes.

jsoup is a Java library for working with HTML. Those using jsoup versions prior to 1.14.2 to parse untrusted HTML or XML may be vulnerable to DOS attacks. If the parser is run on user supplied input, an attacker may supply content that causes the parser to get stuck (loop indefinitely until cancelled), to complete more slowly than usual, or to throw an unexpected exception. This effect may support a denial of service attack. The issue is patched in version 1.14.2. There are a few available workarounds. Users may rate limit input parsing, limit the size of inputs based on system resources, and/or implement thread watchdogs to cap and timeout parse runtimes.

### Impact _What kind of vulnerability is it? Who is impacted?_ Those using jsoup to parse untrusted HTML or XML may be vulnerable to DOS attacks. If the parser is run on user supplied input, an attacker may supply content that causes the parser to get stuck (loop indefinitely until cancelled), to complete more slowly than usual, or to throw an unexpected exception. This effect may support a denial of service attack. ### Patches _Has the problem been patched? What versions should users upgrade to?_ Users should upgrade to jsoup 1.14.2 ### Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_ Users may rate limit input parsing. Users should limit the size of inputs based on system resources. Users should implement thread watchdogs to cap and timeout parse runtimes.

### Impact _What kind of vulnerability is it? Who is impacted?_ Those using jsoup to parse untrusted HTML or XML may be vulnerable to DOS attacks. If the parser is run on user supplied input, an attacker may supply content that causes the parser to get stuck (loop indefinitely until cancelled), to complete more slowly than usual, or to throw an unexpected exception. This effect may support a denial of service attack. ### Patches _Has the problem been patched? What versions should users upgrade to?_ Users should upgrade to jsoup 1.14.2 ### Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_ Users may rate limit input parsing. Users should limit the size of inputs based on system resources. Users should implement thread watchdogs to cap and timeout parse runtimes.

jsoup es una biblioteca Java para trabajar con HTML. Aquellos usando versiones de jsoup anteriores a 1.14.2 para analizar HTML o XML no confiables pueden ser vulnerables a ataques DOS. Si el analizador es ejecutado con una entrada suministrada por el usuario, un atacante puede suministrar contenido que cause que el analizador se atasque (un bucle indefinido hasta que se cancele), para completarse más lentamente de lo habitual o que lance una excepción inesperada. Este efecto puede permitir un ataque de denegación de servicio. El problema está parcheado en versión 1.14.2. Se presentan algunas soluciones disponibles. Los usuarios pueden limitar el análisis de las entradas, limitar el tamaño de las entradas en función de los recursos del sistema, y/o implementar controles de hilos para limitar el tiempo de ejecución del análisis.