Vulnerability Description
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).
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Zeromq | Libzmq | >= 4.2.0, <= 4.2.5 |
| Debian | Debian Linux | 9.0 |
Related Weaknesses (CWE)
References
- https://github.com/zeromq/libzmq/issues/3351ExploitPatchThird Party Advisory
- https://github.com/zeromq/libzmq/releases/tag/v4.3.1Third Party Advisory
- https://security.gentoo.org/glsa/201903-22Third Party Advisory
- https://www.debian.org/security/2019/dsa-4368Third Party Advisory
- https://github.com/zeromq/libzmq/issues/3351ExploitPatchThird Party Advisory
- https://github.com/zeromq/libzmq/releases/tag/v4.3.1Third Party Advisory
- https://security.gentoo.org/glsa/201903-22Third Party Advisory
- https://www.debian.org/security/2019/dsa-4368Third Party Advisory
FAQ
What is CVE-2019-6250?
CVE-2019-6250 is a vulnerability with a CVSS score of 8.8 (HIGH). 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...
How severe is CVE-2019-6250?
CVE-2019-6250 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-6250?
Check the references section above for vendor advisories and patch information. Affected products include: Zeromq Libzmq, Debian Debian Linux.