SB2020092003 - Denial of service in InspIRCd
Published: September 20, 2020
Security Bulletin ID
SB2020092003
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) NULL pointer dereference (CVE-ID: CVE-2019-20917)
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in mysql module, when built against mariadb-connector-c 3.0.5 or newer. A remote user can send specially crafted request to the InspIRCd daemon, trigger a NULL pointer dereference error and crash the server.
Successful exploitation of the vulnerability requires that sqlauth or sqloper modules are used.
Remediation
Install update from vendor's website.