SARA / Free Tools / CVE / CVE-2023-6017

CVE-2023-6017 — H2O included a reference to an S3 bucket that no longer existed allowing an atta

H2O included a reference to an S3 bucket that no longer existed allowing an attacker to take over the S3 bucket URL.

CVSS

8.7 HIGH

EPSS

0.19% (top 58.90%)

CWE

CWE-840

Published

2023-11-16T16:07:01.811Z

Last modified

2024-08-02T08:21:17.158Z

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

01What is this vulnerability?

H2O included a reference to an S3 bucket that no longer existed allowing an attacker to take over the S3 bucket URL.

Vendor	Product	Versions
h2oai	h2oai/h2o	3 — unspecified

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

Patch to a fixed version listed in the vendor advisory (see references below).
Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
Hunt historical logs for exploitation indicators — see Detection signatures below.

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

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