Vulnerability Details 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).
Exploit prediction scoring system (EPSS) score
EPSS Score 0.14
EPSS Ranking 93.9%
CVSS Severity
CVSS v3 Score 8.8
CVSS v2 Score 9.0
References
- https://github.com/zeromq/libzmq/issues/3351
- https://github.com/zeromq/libzmq/releases/tag/v4.3.1
- https://security.gentoo.org/glsa/201903-22
- https://www.debian.org/security/2019/dsa-4368
- https://github.com/zeromq/libzmq/issues/3351
- https://github.com/zeromq/libzmq/releases/tag/v4.3.1
- https://security.gentoo.org/glsa/201903-22
- https://www.debian.org/security/2019/dsa-4368
Products affected by CVE-2019-6250
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cpe:2.3:a:zeromq:libzmq:4.2.0
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cpe:2.3:a:zeromq:libzmq:4.2.1
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cpe:2.3:a:zeromq:libzmq:4.2.2
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cpe:2.3:a:zeromq:libzmq:4.2.3
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cpe:2.3:a:zeromq:libzmq:4.2.4
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cpe:2.3:a:zeromq:libzmq:4.2.5
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cpe:2.3:a:zeromq:libzmq:4.3.0
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cpe:2.3:o:debian:debian_linux:9.0