USN-7405-1: InspIRCd vulnerabilities

2 April 2025

Several security issues were fixed in InspIRCd.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Releases

Packages

  • inspircd - Modular IRCd written in C++

Details

It was discovered that InspIRCd did not correctly handle certificate
fingerprints, which could lead to spoofing. A remote attacker could
possibly use this issue to bypass authentication. This issue only affected
Ubuntu 16.04 LTS. (CVE-2016-7142)

It was discovered that InspIRCd did not correctly handle certain memory
operations, which could lead to a NULL pointer dereference. A remote
attacker could possibly use this issue to cause a denial of service. This
issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.
(CVE-2019-20917)

It was discovered that InspIRCd did not correctly handle certain memory
operations, which could lead to a use-after-free. A remote attacker could
possibly use this issue to cause a denial of service. (CVE-2020-25269)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04

After a standard system update you need to restart InspIRCd to make
all the necessary changes.

References

Join the discussion

Need help with your security needs?

Ubuntu Pro provides up to ten-year security coverage for over 23,000 open-source packages within the Ubuntu Main and Universe repositories.

Talk to an expert to find out what would work best for you

Further reading