CVE-2018-10191

In versions of mruby up to and including 1.4.0, an integer overflow exists in src/vm.c::mrbvmexec() when handling OP_GETUPVAR in the presence of deep scope nesting, resulting in a use-after-free. An attacker that can cause Ruby code to be run can use this to possibly execute arbitrary code.

References

Affected packages

Git / github.com/mruby/mruby

Affected ranges

Type: GIT
Repo: https://github.com/mruby/mruby
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

1905091634a6a2925c911484434448e568330626

Affected versions

1.*

1.0.0

1.1.0

1.2.0

1.3.0

1.4.0

Database specific

vanir_signatures

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    {
        "id": "CVE-2018-10191-4f906dc6",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
            "line_hashes": [
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            "threshold": 0.9
        },
        "target": {
            "file": "src/vm.c"
        },
        "source": "https://github.com/mruby/mruby/commit/1905091634a6a2925c911484434448e568330626"
    },
    {
        "id": "CVE-2018-10191-9de90541",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "function_hash": "105486956670678688502489234273124890437",
            "length": 34172.0
        },
        "target": {
            "file": "src/vm.c",
            "function": "mrb_vm_exec"
        },
        "source": "https://github.com/mruby/mruby/commit/1905091634a6a2925c911484434448e568330626"
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]