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 onigenc_unicode_get_case_fold_codes_by_str() occurs during regular expression compilation. Code point 0xFFFFFFFF is not properly handled in unicode_unfold_key(). A malformed regular expression could result in 4 bytes being written off the end of a stack buffer of expand_case_fold_string() during the call to onigenc_unicode_get_case_fold_codes_by_str(), a typical stack buffer overflow.
Advisories
Source ID Title
EUVD EUVD EUVD-2017-18163 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 onigenc_unicode_get_case_fold_codes_by_str() occurs during regular expression compilation. Code point 0xFFFFFFFF is not properly handled in unicode_unfold_key(). A malformed regular expression could result in 4 bytes being written off the end of a stack buffer of expand_case_fold_string() during the call to onigenc_unicode_get_case_fold_codes_by_str(), a typical stack buffer overflow.
Fixes

Solution

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Workaround

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-09-17T03:07:00.571Z

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

Link: CVE-2017-9225

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2017-05-24T15:29:00.230

Modified: 2025-04-20T01:37:25.860

Link: CVE-2017-9225

cve-icon Redhat

Severity : Moderate

Publid Date: 2017-05-22T00:00:00Z

Links: CVE-2017-9225 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses