CVE-2019-9945
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 · uneditedSoftNAS Cloud 4.2.0 and 4.2.1 allows remote command execution. The NGINX default configuration file has a check to verify the status of a user cookie. If not set, a user is redirected to the login page. An arbitrary value can be provided for this cookie to access the web interface without valid user credentials. If customers have not followed SoftNAS deployment best practices and expose SoftNAS StorageCenter ports directly to the internet, this vulnerability allows an attacker to gain access to the Webadmin interface to create new users or execute arbitrary commands with administrative privileges, compromising both the platform and the data.
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 · high confidenceSoftNAS Cloud 4.2.0 and 4.2.1 contains an authentication bypass vulnerability in the NGINX configuration. The web interface checks for a user cookie to verify authentication status, but accepts arbitrary values, allowing unauthenticated attackers to access the Webadmin interface and execute commands with administrative privileges.
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= 4.2.0= 4.2.1CVSS 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
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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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Identify SoftNAS Cloud versionRun 'softnas -v' or check the SoftNAS Cloud UI footer/version page to determine the installed version numberAffected if The installed version is exactly 4.2.0 or 4.2.1
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Determine Webadmin interface exposureCheck network configuration and firewall rules to see if ports 443 or the StorageCenter web interface are accessible from untrusted networksAffected if The Webadmin interface is accessible from the internet or untrusted networks without VPN/authentication gateway
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Review NGINX configuration for cookie validationLocate and inspect the NGINX configuration file (typically in /etc/nginx/ or the SoftNAS config directory) and examine the logic that handles authentication cookies, looking for any conditional checks that validate cookie valuesAffected if The NGINX configuration accepts arbitrary cookie values without proper validation, or contains a condition that passes authentication for any non-empty cookie value
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Verify cookie-based authentication behaviorAttempt to access the Webadmin interface with a fabricated cookie (such as setting a user cookie to any value like 'test') and observe whether access is granted without proper credentialsAffected if The web interface grants access when an arbitrary value is set for the authentication cookie, indicating the vulnerability is present
You are affected if your SoftNAS Cloud installation is version 4.2.0 or 4.2.1 AND the Webadmin interface is network-accessible AND the NGINX configuration lacks proper cookie validation.
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 dataImmediately restrict public access to SoftNAS StorageCenter ports per deployment best practices. Update to a patched version when available and review NGINX configuration for proper cookie/session validation.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2019-9945 — 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-2019-9945 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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