CVE-2019-19203

An issue was discovered in Oniguruma 6.x before 6.9.4_rc2. In the function gb18030_mbc_enc_len 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.

Database specific

{
    "unresolved_ranges":  [
        {
            "cpes":  [
                "cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*",
                "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*"
            ],
            "extracted_events":  [
                {
                    "introduced":  "30"
                },
                {
                    "last_affected":  "30"
                },
                {
                    "introduced":  "31"
                },
                {
                    "last_affected":  "31"
                }
            ],
            "source":  "CPE_STRING",
            "vendor_product":  "fedoraproject:fedora"
        }
    ]
}

References

Affected packages

Git / github.com/kkos/oniguruma

Affected ranges

Type

GIT

Repo

https://github.com/kkos/oniguruma

Events

Introduced

83375e4d3480d6d9f6fcd6c2f99035e9522ceeae

Fixed

e03900b038a274ee2f1341039e9003875c11e47d

Introduced

976a9bc4d2d53923223f56d1fcc9333430cb15f6

Last Affected

976a9bc4d2d53923223f56d1fcc9333430cb15f6

Fixed

681824e81bb5fc9bbd4dfbe7a07135337129537e

Database specific

Show details

{
    "cpe":  [
        "cpe:2.3:a:oniguruma_project:oniguruma:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:oniguruma_project:oniguruma:6.9.4:rc1:*:*:*:*:*:*"
    ],
    "extracted_events":  [
        {
            "introduced":  "6.0.0"
        },
        {
            "fixed":  "6.9.4"
        },
        {
            "introduced":  "6.9.4-rc1"
        },
        {
            "last_affected":  "6.9.4-rc1"
        }
    ],
    "source":  [
        "CPE_RANGE",
        "CPE_STRING",
        "REFERENCES"
    ]
}

Affected versions

6.*

6.9.4-rc1

v6.*

v6.9.4_rc1

v6.9.4_rc2

v6.9.4_rc3

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-19203.json"

vanir_signatures

[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "18679750778586343771741350755993589288",
                "103368106136942227172244566078932066273",
                "257727887412231991059145261695986113402",
                "99731926145027407046045989165921264745",
                "173237864390474915165548571384207574271",
                "290228417168798604629944627181754726158",
                "215947174697766211659352546659917433609",
                "174440583955296606380940663435750254051",
                "250394807291303202205505094138654332177"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2019-19203-563c27e4",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/kkos/oniguruma/commit/681824e81bb5fc9bbd4dfbe7a07135337129537e",
        "target":  {
            "file":  "harnesses/encode-harness.c"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "267334844810435515714121622196231420596",
            "length":  2816
        },
        "id":  "CVE-2019-19203-718d8559",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/kkos/oniguruma/commit/681824e81bb5fc9bbd4dfbe7a07135337129537e",
        "target":  {
            "file":  "harnesses/encode-harness.c",
            "function":  "LLVMFuzzerTestOneInput"
        }
    }
]

vanir_signatures_modified

"2026-07-08T16:07:57Z"