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

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU66176

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

Published: August 8, 2022


Vulnerability identifier: #VU66176
CSH Severity: High
CVSS v4: 9.2 [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]
CVE-ID: CVE-2021-20235
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

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.


Affected software

zeromq
PowerScale OneFS

How to mitigate CVE-2021-20235

Install updates from vendor's website.

zeromq - update to 4.3.3
PowerScale OneFS - update to 11.7

External References

Related Security Bulletins