CVE-2023-48054
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedMissing SSL certificate validation in localstack v2.3.2 allows attackers to eavesdrop on communications between the host and server via a man-in-the-middle attack.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceLocalStack v2.3.2 fails to validate SSL certificates when establishing HTTPS connections, breaking the trust model of TLS. This allows an attacker positioned on the network path to intercept and eavesdrop on traffic by presenting a fraudulent certificate, effectively conducting a classic man-in-the-middle attack.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 2.3.2CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Verify LocalStack versionRun 'localstack --version' or check the installed package version to confirm it is 2.3.2Affected if The installed version is exactly 2.3.2
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Check for disabled SSL verification in configurationSearch LocalStack configuration files (e.g., localstack/config.py, config.yaml, or environment settings) for flags like 'VERIFY_SSL', 'SSL_VERIFY', or 'verify=False' that disable certificate validationAffected if SSL verification is explicitly disabled in any configuration file or environment variable
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Inspect HTTP client initialization codeExamine the HTTP client code used by LocalStack for outbound HTTPS connections. Look for instances where 'verify=False' is passed to requests.get/post calls or where SSL context verification is set to FalseAffected if The HTTP client code explicitly disables SSL certificate verification when making HTTPS requests
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Check environment variables controlling SSL validationReview environment variables set for the LocalStack process, looking for variables that override default SSL behavior (e.g., LOCALSTACK_VERIFY_SSL=false, REQUESTS_CA_BUNDLE not set, or similar overrides)Affected if Environment variables are configured to bypass SSL certificate validation
A user is affected if they are running exactly LocalStack version 2.3.2 AND SSL certificate validation has been disabled in configuration, code, or environment settings for outbound HTTPS connections.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataEnsure proper SSL certificate validation is enabled for all HTTPS connections in LocalStack. Update to a patched version if available, or review HTTP client code to verify cert validation is not explicitly disabled.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-48054 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-48054 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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