HOMEVULNERABILITIESCVE-2017-9224
CRITICAL

CVE-2017-9224

CWE-125Published: May 24, 2017· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official 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 stack out-of-bounds read occurs in match_at() during regular expression searching. A logical error involving order of validation and access in match_at() could result in an out-of-bounds read from a stack buffer.

NVD Source

Technical Analysis

CVE-2017-9224 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

oniguruma_project1 product(s)
oniguruma
PHP1 product(s)
php
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/kkos/oniguruma/commit/690313a061f7a4fa614ec5cc8368b4f2284e059b
PATCHhttps://github.com/kkos/oniguruma/commit/690313a061f7a4fa614ec5cc8368b4f2284e059b
ADVISORYhttp://www.securityfocus.com/bid/101244
ADVISORYhttps://access.redhat.com/errata/RHSA-2018:1296
ADVISORYhttps://github.com/kkos/oniguruma/issues/57
ADVISORYhttp://www.securityfocus.com/bid/101244
ADVISORYhttps://access.redhat.com/errata/RHSA-2018:1296
ADVISORYhttps://github.com/kkos/oniguruma/issues/57

All References (8)

→
http://www.securityfocus.com/bid/101244Third Party Advisory · VDB Entry
→
https://access.redhat.com/errata/RHSA-2018:1296Third Party Advisory
→
https://github.com/kkos/oniguruma/commit/690313a061f7a4fa614ec5cc8368b4f2284e059bPatch · Third Party Advisory
→
https://github.com/kkos/oniguruma/issues/57Exploit · Issue Tracking · Third Party Advisory
→
http://www.securityfocus.com/bid/101244Third Party Advisory · VDB Entry
→
https://access.redhat.com/errata/RHSA-2018:1296Third Party Advisory
→
https://github.com/kkos/oniguruma/commit/690313a061f7a4fa614ec5cc8368b4f2284e059bPatch · Third Party Advisory
→
https://github.com/kkos/oniguruma/issues/57Exploit · Issue Tracking · Third Party Advisory

Quick Facts

CVE IDCVE-2017-9224
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-125
CISA KEVNo
Affected2 vendor(s)
PublishedMay 24, 2017

Related CVEs (CWE-125)

CVE-2013-0767
10.0
CVE-2021-21777
10.0
CVE-2021-41556
10.0
CVE-2017-14451
10.0
CVE-2009-2523
10.0
CVE-2023-26489
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-9224 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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