SB2020092005 - Debian update for inspircd

Security Bulletin ID SB2020092005

Severity

Medium

Patch available

YES

Number of vulnerabilities 2

Exploitation vector Remote access

Highest impact Denial of service

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

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.

2) Use-after-free (CVE-ID: CVE-2020-25269)

The vulnerability allows a remote user to crash the daemon.

The vulnerability exists due to a use-after-free error within the pgsql module in InspIRCd. A remote user can send specially crafted request to the daemon, trigger a use-after-free 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.

References

https://www.debian.org/security/2020/dsa-4764