CVE-2019-20917 json
An issue was discovered in InspIRCd 2 before 2.0.28 and 3 before 3.3.0.
published 2020-09-11 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-11450
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.8%
- EPSS 2.8% chance of exploitation in 30 days, percentile 86%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- inspircd inspircd 2.0.28, 3.3.0
- inspircd Debian 13, Debian 12 3.3.0-1
debian advisories DEBIAN-CVE-2019-20917
- inspircd Ubuntu Pro 16.04 LTS 2.0.20-5ubuntu0.1~esm1
- inspircd Ubuntu Pro 18.04 LTS 2.0.24-1ubuntu1+esm1
ubuntu advisories UBUNTU-CVE-2019-20917
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
Exploit prediction
2.79% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:L/Au:S/C:N/I:N/A:C |
Classification
- Weakness
-
- CWE-476 NULL Pointer Dereference
References
-
github.com
/inspircd/inspircd/commit/2cc35d8625b7ea5cbd1d1ebb116aff86c5280162
patch, third-party-advisory
-
github.com
/inspircd/inspircd/commit/8745660fcdac7c1b80c94cfc0ff60928cd4dd4b7
patch, third-party-advisory
-
debian.org
/security/2020/dsa-4764
vendor-advisory, third-party-advisory
-
docs.inspircd.org
/security/2019-02/
vendor-advisory
-
lists.debian.org
/debian-lts-announce/2020/09/msg00015.html
mailing-list, third-party-advisory
Sources
- CVE List CVE-2019-20917
- NVD CVE-2019-20917
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.