SB2021040190 - Out-of-bounds write in www.zeromq zeromq
Published: April 1, 2021 Updated: June 5, 2023
Security Bulletin ID
SB2021040190
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Out-of-bounds write (CVE-ID: CVE-2021-20235)
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 update from vendor's website.