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CVE-2019-6250

Published: 13 January 2019

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).

Priority

Medium

CVSS 3 base score: 8.8

Status

Package Release Status
zeromq3
Launchpad, Ubuntu, Debian
Upstream
Released (4.3.1-1)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.2.5-1ubuntu0.1)
Ubuntu 16.04 ESM (Xenial Xerus) Not vulnerable
(code not present)
Ubuntu 14.04 ESM (Trusty Tahr) Not vulnerable
(code not present)