SB2023060623 - Denial of service in Zyxel 4G LTE and 5G NR outdoor routers
Published: June 6, 2023
Security Bulletin ID
SB2023060623
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2023-27989)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in the CGI program. A remote user can send a specially crafted HTTP request, trigger memory corruption and cause a denial of service condition on the target system.
Remediation
Install update from vendor's website.