SB2019011711 - Remote code execution in ZeroMQ libzmq

Description

This security bulletin contains information about 1 security vulnerability.

1) Integer overflow (CVE-ID: CVE-2019-6250)

The vulnerability allows a remote authenticated attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in a v2_decoder.cpp zmq::v2_decoder_t::size_ready. A remote authenticated attacker can overwrite an arbitrary amount of bytes beyond the bounds of a buffer and inject OS commands into a data structure located immediately after the problematic buffer to execute arbitrary code with elevated privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• https://github.com/zeromq/libzmq/issues/3351
• https://github.com/zeromq/libzmq/releases/tag/v4.3.1