CVE-2019-20917

Name: CVE-2019-20917
Creator: NVD / NIST
Published: 2020-09-11T05:15:12.48+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 2.79%

Last modified Jun 17, 2026

CVE-2019-20917 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. An issue was discovered in InspIRCd 2 before 2.0.28 and 3 before 3.3.0. The mysql module contains a NULL pointer dereference when built against mariadb-connector-c 3.0.5 or newer. EPSS estimates a 2.79% chance of exploitation in the next 30 days.

Description

An issue was discovered in InspIRCd 2 before 2.0.28 and 3 before 3.3.0. The mysql module contains a NULL pointer dereference when built against mariadb-connector-c 3.0.5 or newer. When combined with the sqlauth or sqloper modules, this vulnerability can be used for remote crashing of an InspIRCd server by any user able to connect to a server.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

2.79%

84.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Inspircd	Inspircd	>= 2.0, < 2.0.28
Inspircd	Inspircd	>= 3.0, < 3.3.0
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0

References

https://docs.inspircd.org/security/2019-02/Vendor Advisory
https://github.com/inspircd/inspircd/commit/2cc35d8625b7ea5cbd1d1ebb116aff86c5280162Patch, Third Party Advisory
https://github.com/inspircd/inspircd/commit/8745660fcdac7c1b80c94cfc0ff60928cd4dd4b7Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00015.htmlMailing List, Third Party Advisory
https://www.debian.org/security/2020/dsa-4764Third Party Advisory
https://docs.inspircd.org/security/2019-02/Vendor Advisory
https://github.com/inspircd/inspircd/commit/2cc35d8625b7ea5cbd1d1ebb116aff86c5280162Patch, Third Party Advisory
https://github.com/inspircd/inspircd/commit/8745660fcdac7c1b80c94cfc0ff60928cd4dd4b7Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00015.htmlMailing List, Third Party Advisory
https://www.debian.org/security/2020/dsa-4764Third Party Advisory

Timeline

Published: Sep 11, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-20917?

How severe is CVE-2019-20917?

CVE-2019-20917 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 2.79% probability of exploitation in the next 30 days.

How do I fix CVE-2019-20917?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-20917?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST