#VU66176 Out-of-bounds write in zeromq - CVE-2021-20235

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Main Vulnerability Database Vulnerabilities #VU66176

#VU66176 Out-of-bounds write in zeromq - CVE-2021-20235

Published: August 8, 2022


Vulnerability identifier: #VU66176
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2021-20235
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
zeromq
Software vendor:
ZeroMQ Project

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error in src/decoder_allocators.hpp. A remote attacker can send a specially crafted request to the zeromq server and trigger a buffer overflow write of arbitrary data if CURVE/ZAP authentication is not enabled.


Remediation

Install updates from vendor's website.

External links