CVE-2021-33586

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Source
https://cve.org/CVERecord?id=CVE-2021-33586
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-33586.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-33586
Downstream
Published
2021-05-27T05:15:06.993Z
Modified
2026-03-14T14:45:23.341967Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
[none]
Details

InspIRCd 3.8.0 through 3.9.x before 3.10.0 allows any user (able to connect to the server) to access recently deallocated memory, aka the "malformed PONG" issue.

References

Affected packages

Git / github.com/inspircd/inspircd

Affected ranges

Type
GIT
Repo
https://github.com/inspircd/inspircd
Events
Introduced
d38595e7e14e7509e744d33df657d50d00cc201f
Fixed
6ff8f38a6d55970af1400cc78994e017ca351c39
Fixed
4350a11c663b0d75f8119743bffb7736d87abd4d
Database specific 
{
    "versions": [
        {
            "introduced": "3.8.0"
        },
        {
            "fixed": "3.10.0"
        }
    ]
}

Affected versions

v3.*
v3.8.0
v3.8.1
v3.9.0

Database specific

vanir_signatures 
[
    {
        "id": "CVE-2021-33586-44bd76ff",
        "signature_type": "Line",
        "target": {
            "file": "include/clientprotocolmsg.h"
        },
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "172236433412257313883103957772383903383",
                "220703310501416717366140712732379042131",
                "52434925730221493171471376307921343860",
                "70281737129417841586534436710458404628",
                "263384407924776216272824341098924172406",
                "315415170026200256221787970084830905795"
            ],
            "threshold": 0.9
        },
        "signature_version": "v1",
        "source": "https://github.com/inspircd/inspircd/commit/4350a11c663b0d75f8119743bffb7736d87abd4d"
    },
    {
        "id": "CVE-2021-33586-6c241bbe",
        "signature_type": "Line",
        "target": {
            "file": "src/coremods/core_user/core_user.cpp"
        },
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "324890397734487770979278848730261565209",
                "249933969203486859797144565555425798009",
                "122328167582706218575434760079144219617",
                "206397735007201542476051935054925026908"
            ],
            "threshold": 0.9
        },
        "signature_version": "v1",
        "source": "https://github.com/inspircd/inspircd/commit/4350a11c663b0d75f8119743bffb7736d87abd4d"
    }
]
source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-33586.json"