Debian update for inspircd

Published: 2020-09-20

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2019-20917 CVE-2020-25269
CWE-ID	CWE-476 CWE-416
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	inspircd (Debian package) Operating systems & Components / Operating system package or component
Vendor	Debian

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) NULL pointer dereference

EUVDB-ID: #VU46821

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-20917

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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.

Mitigation

Update inspircd package to version 2.0.27-1+deb10u1.

Vulnerable software versions

inspircd (Debian package): 2.0.5-0.1 - 2.0.27-1

External links

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

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Use-after-free

EUVDB-ID: #VU46820