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CVE-2017-9229

27
FAUCET Score

CVE-2017-9229 is a denial-of-service vulnerability affecting Oniguruma 6.2.0, as well as its use in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. The flaw, categorized as CWE-476 (NULL Pointer Dereference), occurs during regular expression compilation due to invalid handling of 'reg->dmax' in 'forward_search_range()', leading to an invalid pointer dereference and a SIGSEGV crash. Rated 7.5 HIGH on CVSS, this vulnerability can be exploited remotely with low attack complexity, resulting in a complete loss of availability for affected systems. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
6.2.0CPE matchmatch criteria
cpe:2.3:a:oniguruma_project:oniguruma:6.2.0:*:*:*:*:*:*:*
<= 7.1.5CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:oniguruma-mod:*:*
<= 2.4.1CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:oniguruma-mod:*:*
>= 5.6.0, < 5.6.31CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
>= 7.0.0, < 7.0.21CPE matchmatch criteria
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
5.32%
Probability of exploitation in next 30 days
EPSS Percentile
91.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0532 is in the 85th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (22)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUSFixed in: rh-php70-php-0:7.0.27-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-php70-php-0:7.0.27-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUSFixed in: rh-php70-php-0:7.0.27-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: rh-php70-php-0:7.0.27-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSFixed in: rh-php70-php-0:7.0.27-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-php70-php-0:7.0.27-1.el7
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Subscription Asset ManagerFixed in: ruby193-ruby
redhatvendor investigatingvia redhat_api
Product: CloudForms Management Engine 5Fixed in: rh-ruby22-ruby
redhatvendor investigatingvia redhat_api
Product: CloudForms Management Engine 5Fixed in: ruby-200-ruby
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: php53
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: ruby
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: oniguruma
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: php
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: ruby
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: php
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: ruby
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-php56-php
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-ruby22-ruby
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-ruby23-ruby
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-ruby24-ruby
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: php

Vendor Advisories (1)

redhatCVE-2017-9229Moderate

oniguruma: Invalid pointer dereference in left_adjust_char_head()

May 23, 2017

References

access.redhat.com / errata/RHSA-2018:1296
Third Party Advisory
github.com / kkos/oniguruma/commit/b690371bbf97794b4a1d3f295d4fb9a8b05d402d
PatchThird Party Advisory
github.com / kkos/oniguruma/issues/59
ExploitThird Party Advisory