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.

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7405-1 advisory.

    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)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Two security issues were discovered in the pgsql and mysql modules of the InspIRCd IRC daemon, which could result in denial of service.

Two security issues were discovered in the modules of the InspIRCd IRC daemon, which could result in denial of service.

CVE-2019-20917

mysql module before v3.3.0 contains a NULL pointer dereference when built against mariadb-connector-c. When combined with the sqlauth or sqloper modules this vulnerability can be used to remotely crash an InspIRCd server by any user able to connect to a server.

CVE-2020-25269

The pgsql module contains a use after free vulnerability. When combined with the sqlauth or sqloper modules this vulnerability can be used to remotely crash an InspIRCd server by any user able to connect to a server.

For Debian 9 stretch, these problems have been fixed in version 2.0.23-2+deb9u1.

We recommend that you upgrade your inspircd packages.

For the detailed security status of inspircd please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/inspircd

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
233771	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : InspIRCd vulnerabilities (USN-7405-1)	Nessus	Ubuntu Local Security Checks	medium
140666	Debian DSA-4764-1 : inspircd - security update	Nessus	Debian Local Security Checks	medium
140665	Debian DLA-2375-1 : inspircd security update	Nessus	Debian Local Security Checks	medium

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CVE-2020-25269

medium

Tenable Plugins

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medium