CVE-2017-9225

An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A stack out-of-bounds write in onigencunicodegetcasefoldcodesbystr() occurs during regular expression compilation. Code point 0xFFFFFFFF is not properly handled in unicodeunfoldkey(). A malformed regular expression could result in 4 bytes being written off the end of a stack buffer of expandcasefoldstring() during the call to onigencunicodegetcasefoldcodesby_str(), a typical stack buffer overflow.

References

Affected packages

Git / github.com/kkos/oniguruma

Affected ranges

Type

GIT

Repo

https://github.com/kkos/oniguruma

Events

Introduced

c4ce370f5754b34321c7f87cdc6f198864221eca

Last affected

c4ce370f5754b34321c7f87cdc6f198864221eca

Fixed

166a6c3999bf06b4de0ab4ce6b088a468cc4029f

Database specific

Show details

{
    "source": [
        "CPE_STRING",
        "REFERENCES"
    ],
    "cpe": "cpe:2.3:a:oniguruma_project:oniguruma:6.2.0:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "6.2.0"
        },
        {
            "last_affected": "6.2.0"
        }
    ]
}

Affected versions

6.*

6.2.0

v6.*

v6.2.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-9225.json"

vanir_signatures

[
    {
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "324108389711674846455372721615815071752",
                "78125804542342940617720207021732851899",
                "288314762901706662148070349691664859187",
                "194786076425880166381460759605312479128"
            ]
        },
        "target": {
            "file": "src/unicode_unfold_key.c"
        },
        "source": "https://github.com/kkos/oniguruma/commit/166a6c3999bf06b4de0ab4ce6b088a468cc4029f",
        "signature_version": "v1",
        "id": "CVE-2017-9225-3fa17e87",
        "deprecated": false
    },
    {
        "signature_type": "Function",
        "digest": {
            "function_hash": "178544139292996599899959759183935258796",
            "length": 37595.0
        },
        "target": {
            "function": "unicode_unfold_key",
            "file": "src/unicode_unfold_key.c"
        },
        "source": "https://github.com/kkos/oniguruma/commit/166a6c3999bf06b4de0ab4ce6b088a468cc4029f",
        "signature_version": "v1",
        "id": "CVE-2017-9225-5da41359",
        "deprecated": false
    }
]

vanir_signatures_modified

"2026-08-07T14:59:23Z"

Git / github.com/php/php-src

Affected ranges

Type

GIT

Repo

https://github.com/php/php-src

Events

Introduced

Last affected

5d08c710749096291e294afd641e4429760c6c6e

Database specific

Show details

{
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:php:php:*:*:*:*:*:oniguruma-mod:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "7.1.5"
        }
    ]
}

Affected versions

Other

POST_64BIT_BRANCH_MERGE

POST_AST_MERGE

POST_PHP7_NSAPI_REMOVAL

POST_PHP7_REMOVALS

POST_PHPNG_MERGE

PRE_64BIT_BRANCH_MERGE

PRE_AST_MERGE

PRE_PHP7_EREG_MYSQL_REMOVALS

PRE_PHP7_NSAPI_REMOVAL

PRE_PHP7_REMOVALS

php-7.*

php-7.1.5

php-7.1.5RC1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-9225.json"

Git / github.com/ruby/ruby

Affected ranges

Type

GIT

Repo

https://github.com/ruby/ruby

Events

Introduced

Last affected

820605ba3c10b9f4dafc4e5d6e09765b8b31cbea

Database specific

Show details

{
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:oniguruma-mod:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "2.4.1"
        }
    ]
}

Affected versions

Other

v1_0_r2

v2_4_1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-9225.json"