CVE-2019-6250
A pointer overflow, with code execution, was discovered in ZeroMQ libzmq (aka 0MQ) 4.2.x and 4.3.x before 4.3.1. A v2_decoder.cpp zmq::v2_decoder_t::size_ready integer overflow allows an authenticated attacker to overwrite an arbitrary amount of bytes beyond the bounds of a buffer, which can be leveraged to run arbitrary code on the target system. The memory layout allows the attacker to inject OS commands into a data structure located immediately after the problematic buffer (i.e., it is not necessary to use a typical buffer-overflow exploitation technique that changes the flow of control).
| Software | From | Fixed in |
|---|---|---|
| zeromq / libzmq | 4.3.0 | 4.3.1 |
| zeromq / libzmq | 4.2.0 | 4.2.5.x |
| debian / debian_linux | 9.0 | 9.0.x |
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