Description
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 heap out-of-bounds write or read occurs in next_state_val() during regular expression compilation. Octal numbers larger than 0xff are not handled correctly in fetch_token() and fetch_token_in_cc(). A malformed regular expression containing an octal number in the form of '\700' would produce an invalid code point value larger than 0xff in next_state_val(), resulting in an out-of-bounds write memory corruption.
Published: 2017-05-24
Score: 9.8 Critical
EPSS: 1.1% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-958-1 libonig security update
EUVD EUVD EUVD-2017-18164 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 heap out-of-bounds write or read occurs in next_state_val() during regular expression compilation. Octal numbers larger than 0xff are not handled correctly in fetch_token() and fetch_token_in_cc(). A malformed regular expression containing an octal number in the form of '\700' would produce an invalid code point value larger than 0xff in next_state_val(), resulting in an out-of-bounds write memory corruption.
Ubuntu USN Ubuntu USN USN-3382-1 PHP vulnerabilities
Ubuntu USN Ubuntu USN USN-3382-2 PHP vulnerabilities
History

Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00733}

epss

{'score': 0.0099}


Subscriptions

Oniguruma Project Oniguruma
Php Php
Redhat Rhel Software Collections
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-05T17:02:44.087Z

Reserved: 2017-05-24T00:00:00.000Z

Link: CVE-2017-9226

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2017-05-24T15:29:00.277

Modified: 2026-05-13T00:24:29.033

Link: CVE-2017-9226

cve-icon Redhat

Severity : Moderate

Publid Date: 2017-05-18T00:00:00Z

Links: CVE-2017-9226 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses