SB2020092002 - Denial of service in InspIRCd
Published: September 20, 2020
Security Bulletin ID
SB2020092002
CSH 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 vulnerability.
1) Use-after-free (CVE-ID: CVE-2019-20918)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error in the silence module in InspIRCd. A remote authenticated user can send specially crafted request to the daemon and crash it.
Remediation
Install update from vendor's website.