THREATPORT/VULNERABILITY/CVE-2017-9229
HIGH SEVERITY

CVE-2017-9229

Oniguruma vulnerability

CVSS
7.5
EPSS
5.1%
EPSS pct
92th
Exploited
No known
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 SIGSEGV occurs in left_adjust_char_head() during regular expression compilation. Invalid handling of reg->dmax in forward_search_range() could result in an invalid pointer dereference, normally as an immediate denial-of-service condition.
Affected vendor
Oniguruma Project
Affected product
Oniguruma
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness type (CWE)
  • CWE-476 — NULL Pointer Dereference
Published
2017-05-24

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 5.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 92% of all scored CVEs.

Check your external exposure to CVE-2017-9229

  • Confirm whether Oniguruma Project Oniguruma is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2017-9229.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2017-9229

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2017-9229 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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