THREATPORT/VULNERABILITY/CVE-2023-6038
HIGH SEVERITY

CVE-2023-6038

H2o vulnerability

CVSS
7.5
EPSS
4.3%
EPSS pct
90th
Exploited
No known
A Local File Inclusion (LFI) vulnerability exists in the h2o-3 REST API, allowing unauthenticated remote attackers to read arbitrary files on the server with the permissions of the user running the h2o-3 instance. This issue affects the default installation and does not require user interaction. The vulnerability can be exploited by making specific GET or POST requests to the ImportFiles and ParseSetup endpoints, respectively. This issue was identified in version 3.40.0.4 of h2o-3.
Affected vendor
H2o
Affected product
H2o
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness type (CWE)
Published
2023-11-16

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 confidentiality.

Its EPSS score of 4.3% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 90% of all scored CVEs.

Check your external exposure to CVE-2023-6038

  • Confirm whether H2o H2o is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2023-6038.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2023-6038

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