CVE-2018-11743

The initcopy function in kernel.c in mruby 1.4.1 makes initializecopy calls for TTICLASS objects, which allows attackers to cause a denial of service (mrbhash_keys uninitialized pointer and application crash) or possibly have unspecified other impact.

References

Affected packages

Git / github.com/mruby/mruby

Affected ranges

Type

GIT

Repo

https://github.com/mruby/mruby

Events

Introduced

Last affected

023070a6396233974785a8fd5735b9380a884f27

Fixed

b64ce17852b180dfeea81cf458660be41a78974d

Database specific

{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.4.1"
        }
    ]
}

Affected versions

1.*

1.0.0

1.1.0

1.2.0

1.4.1

Database specific

unresolved_ranges

[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "9.0"
            }
        ]
    }
]

vanir_signatures

[
    {
        "deprecated": false,
        "signature_version": "v1",
        "id": "CVE-2018-11743-244638a9",
        "digest": {
            "length": 583.0,
            "function_hash": "48112143005334984103996638571299297107"
        },
        "source": "https://github.com/mruby/mruby/commit/b64ce17852b180dfeea81cf458660be41a78974d",
        "signature_type": "Function",
        "target": {
            "file": "src/kernel.c",
            "function": "init_copy"
        }
    },
    {
        "deprecated": false,
        "signature_version": "v1",
        "id": "CVE-2018-11743-c2146ee5",
        "digest": {
            "line_hashes": [
                "295482155461672475953902644544377184591",
                "164249401958941042688244750441504177802",
                "195418266659789850486705450476988748358",
                "159697100646635414149928797440161989047"
            ],
            "threshold": 0.9
        },
        "source": "https://github.com/mruby/mruby/commit/b64ce17852b180dfeea81cf458660be41a78974d",
        "signature_type": "Line",
        "target": {
            "file": "src/kernel.c"
        }
    }
]

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-11743.json"

vanir_signatures_modified

"2026-04-11T12:27:24Z"