CVE-2020-25269

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-09-11 · updated 2026-06-17
Weakness: CWE-416

Description

An issue was discovered in InspIRCd 2 before 2.0.29 and 3 before 3.6.0. The pgsql module contains a use after free vulnerability. 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.

Affected products

Debian Linux: 9.0, 10.0
Inspircd: from 2.0 before 2.0.29; from 3.0 before 3.6.0 — fixed in 2.0.29, 3.6.0

How to fix

Upgrade to a fixed version: Inspircd 2.0.29, 3.6.0. Check the vendor advisory for mitigations.

References

https://docs.inspircd.org/security/2020-01/
https://github.com/inspircd/inspircd/compare/426d1c8...b3f1db9
https://github.com/inspircd/inspircd/compare/v2.0.28...07d7dea
https://lists.debian.org/debian-lts-announce/2020/09/msg00015.html
https://www.debian.org/security/2020/dsa-4764
https://docs.inspircd.org/security/2020-01/
https://github.com/inspircd/inspircd/compare/426d1c8...b3f1db9
https://github.com/inspircd/inspircd/compare/v2.0.28...07d7dea
https://lists.debian.org/debian-lts-announce/2020/09/msg00015.html
https://www.debian.org/security/2020/dsa-4764

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