CVE-2019-20918

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Source
https://cve.org/CVERecord?id=CVE-2019-20918
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20918.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2019-20918
Published
2020-09-11T05:15:12.543Z
Modified
2026-07-15T10:01:48.644766Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

An issue was discovered in InspIRCd 3 before 3.1.0. The silence module contains a use after free vulnerability. This vulnerability can be used for remote crashing of an InspIRCd server by any user able to fully connect to a server.

References

Affected packages

Git / github.com/inspircd/inspircd

Affected ranges

Type
GIT
Repo
https://github.com/inspircd/inspircd
Events
Introduced
68e5d0a151d8b5ca6577a0053dcda95774bf323a
Fixed
6e6007ef83e2b88b68e8cc5cc1591c1ca7ff96c7
Fixed
7b47de3c194f239c5fea09a0e49696c9af017d51
Fixed
bcd65de1ec4bb71591ae417fee649d7ecd37cd57
Database specific 
{
    "cpe": "cpe:2.3:a:inspircd:inspircd:*:*:*:*:*:*:*:*",
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "3.0"
        },
        {
            "fixed": "3.1.0"
        }
    ]
}

Affected versions

v3.*
v3.0.0
v3.0.1

Database specific

vanir_signatures_modified 
"2026-07-15T10:01:48Z"
vanir_signatures 
[
    {
        "signature_type": "Line",
        "target": {
            "file": "src/modules/m_silence.cpp"
        },
        "deprecated": false,
        "source": "https://github.com/inspircd/inspircd/commit/7b47de3c194f239c5fea09a0e49696c9af017d51",
        "id": "CVE-2019-20918-278ca253",
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
                "137281295551576114536106547822918544856",
                "294144551638259249213576490600158680981",
                "258980650919900689067586385960914644667",
                "158212954580586726344151970505063627189"
            ],
            "threshold": 0.9
        }
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20918.json"