CVE-2019-19203

An issue was discovered in Oniguruma 6.x before 6.9.4rc2. In the function gb18030mbcenclen in file gb18030.c, a UChar pointer is dereferenced without checking if it passed the end of the matched string. This leads to a heap-based buffer over-read.

References

Affected packages

Git / github.com/kkos/oniguruma

Affected ranges

Type: GIT
Repo: https://github.com/kkos/oniguruma
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

681824e81bb5fc9bbd4dfbe7a07135337129537e

Affected versions

v5.*

v5.9.6

v6.*

v6.0.0

v6.1.0

v6.1.1

v6.1.2

v6.1.3

v6.2.0

v6.3.0

v6.4.0

v6.5.0

v6.6.0

v6.6.1

v6.7.0

v6.7.1

v6.8.0

v6.8.1

v6.8.2

v6.9.0

v6.9.1

v6.9.2

v6.9.2_rc1

v6.9.2_rc2

v6.9.2_rc3

v6.9.3

v6.9.4_rc1

Database specific

{
    "vanir_signatures": [
        {
            "signature_version": "v1",
            "deprecated": false,
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "18679750778586343771741350755993589288",
                    "103368106136942227172244566078932066273",
                    "257727887412231991059145261695986113402",
                    "99731926145027407046045989165921264745",
                    "173237864390474915165548571384207574271",
                    "290228417168798604629944627181754726158",
                    "215947174697766211659352546659917433609",
                    "174440583955296606380940663435750254051",
                    "250394807291303202205505094138654332177"
                ]
            },
            "id": "CVE-2019-19203-563c27e4",
            "source": "https://github.com/kkos/oniguruma/commit/681824e81bb5fc9bbd4dfbe7a07135337129537e",
            "signature_type": "Line",
            "target": {
                "file": "harnesses/encode-harness.c"
            }
        },
        {
            "signature_version": "v1",
            "deprecated": false,
            "digest": {
                "length": 2816.0,
                "function_hash": "267334844810435515714121622196231420596"
            },
            "id": "CVE-2019-19203-718d8559",
            "source": "https://github.com/kkos/oniguruma/commit/681824e81bb5fc9bbd4dfbe7a07135337129537e",
            "signature_type": "Function",
            "target": {
                "function": "LLVMFuzzerTestOneInput",
                "file": "harnesses/encode-harness.c"
            }
        }
    ]
}