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 occurs in bitset_set_range() during regular expression compilation due to an uninitialized variable from an incorrect state transition. An incorrect state transition in parse_char_class() could create an execution path that leaves a critical local variable uninitialized until it's used as an index, resulting in an out-of-bounds write memory corruption.
Published: 2017-05-24
Score: 9.8 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-958-1 libonig security update
EUVD EUVD EUVD-2017-18166 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 occurs in bitset_set_range() during regular expression compilation due to an uninitialized variable from an incorrect state transition. An incorrect state transition in parse_char_class() could create an execution path that leaves a critical local variable uninitialized until it's used as an index, 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': 0.00432}

epss

{'score': 0.00886}


Subscriptions

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

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-05T17:02:43.688Z

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

Link: CVE-2017-9228

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2017-05-24T15:29:00.370

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

Link: CVE-2017-9228

cve-icon Redhat

Severity : Moderate

Publid Date: 2017-05-23T00:00:00Z

Links: CVE-2017-9228 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses