CVE-2022-28805

singlevar in lparser.c in Lua from (including) 5.4.0 up to (excluding) 5.4.4 lacks a certain luaK_exp2anyregup call, leading to a heap-based buffer over-read that might affect a system that compiles untrusted Lua code.

References

Affected packages

Git / github.com/lua/lua

Affected ranges

Type

GIT

Repo

https://github.com/lua/lua

Events

Introduced

c33b1728aeb7dfeec4013562660e07d32697aa6b

Fixed

e15f1f2bb7a38a3c94519294d031e48508d65006

Fixed

1f3c6f4534c6411313361697d98d1145a1f030fa

Database specific

{
    "versions": [
        {
            "introduced": "5.4.0"
        },
        {
            "fixed": "5.4.5"
        }
    ]
}

Affected versions

v5.*

v5.4.0

v5.4.1

v5.4.2

v5.4.3

v5.4.4

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-28805.json"

unresolved_ranges

[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "35"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "36"
            }
        ]
    }
]

vanir_signatures

[
    {
        "deprecated": false,
        "signature_type": "Function",
        "signature_version": "v1",
        "digest": {
            "function_hash": "53201180014080356134198209586064207783",
            "length": 347.0
        },
        "source": "https://github.com/lua/lua/commit/1f3c6f4534c6411313361697d98d1145a1f030fa",
        "id": "CVE-2022-28805-6dde851f",
        "target": {
            "file": "lparser.c",
            "function": "singlevar"
        }
    },
    {
        "deprecated": false,
        "signature_type": "Line",
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
                "32201794497045802336489965260675966661",
                "222355253276990523824162340041015369710",
                "28722556712081149350779902624787499513",
                "154526588328123496999063531195759804808"
            ],
            "threshold": 0.9
        },
        "source": "https://github.com/lua/lua/commit/1f3c6f4534c6411313361697d98d1145a1f030fa",
        "id": "CVE-2022-28805-a5c78703",
        "target": {
            "file": "lparser.c"
        }
    }
]