Описание
HAProxyMessageDecoder Stack Exhaustion DoS
Impact
A StackOverflowError can be raised when parsing a malformed crafted message due to an infinite recursion.
Patches
Users should upgrade to 4.1.86.Final.
Workarounds
There is no workaround, except using a custom HaProxyMessageDecoder.
References
When parsing a TLV with type = PP2_TYPE_SSL, the value can be again a TLV with type = PP2_TYPE_SSL and so on. The only limitation of the recursion is that the TLV length cannot be bigger than 0xffff because it is encoded in an unsigned short type. Providing a TLV with a nesting level that is large enough will lead to raising of a StackOverflowError. The StackOverflowError will be caught if HAProxyMessageDecoder is used as part of Netty’s ChannelPipeline, but using it directly without the ChannelPipeline will lead to a thrown exception / crash.
For more information
If you have any questions or comments about this advisory:
- Open an issue in netty
Пакеты
io.netty:netty-codec-haproxy
< 4.1.86.Final
4.1.86.Final
Связанные уязвимости
Netty project is an event-driven asynchronous network application framework. In versions prior to 4.1.86.Final, a StackOverflowError can be raised when parsing a malformed crafted message due to an infinite recursion. This issue is patched in version 4.1.86.Final. There is no workaround, except using a custom HaProxyMessageDecoder.
Netty project is an event-driven asynchronous network application framework. In versions prior to 4.1.86.Final, a StackOverflowError can be raised when parsing a malformed crafted message due to an infinite recursion. This issue is patched in version 4.1.86.Final. There is no workaround, except using a custom HaProxyMessageDecoder.
Netty project is an event-driven asynchronous network application framework. In versions prior to 4.1.86.Final, a StackOverflowError can be raised when parsing a malformed crafted message due to an infinite recursion. This issue is patched in version 4.1.86.Final. There is no workaround, except using a custom HaProxyMessageDecoder.
Netty project is an event-driven asynchronous network application fram ...
Уязвимость сетевого программного средства Netty связана с неконтролируемой рекурсией, позволяющая нарушителю вызвать отказ в обслуживании