CVE-2020-37228
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 · uneditediDS6 DSSPro Digital Signage System 6.2 contains a CAPTCHA security bypass vulnerability that allows attackers to bypass authentication by requesting the autoLoginVerifyCode object. Attackers can retrieve valid CAPTCHA codes via the login endpoint and use them to perform brute-force attacks against user accounts.
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 confidenceiDS6 DSSPro Digital Signage System 6.2 has a CAPTCHA bypass vulnerability where the autoLoginVerifyCode object can be requested directly, allowing attackers to retrieve valid CAPTCHA codes without proper validation. This enables automated brute-force attacks against user accounts since the CAPTCHA protection is not correctly enforced during authentication.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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:3.1/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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Confirm iDS6 DSSPro installation and versionLocate the DSSPro installation directory or check the application startup/log files for version information. Look for version strings referencing '6.2' or check the application banner/service information.Affected if The installed version is 6.2 or falls within the affected range around 6.2
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Identify web server configuration for DSSProCheck the web server (typically embedded) configuration files that serve the DSSPro web interface. Look for endpoints related to authentication and CAPTCHA functionality.Affected if The web interface serves authentication endpoints including those for CAPTCHA verification
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Verify autoLoginVerifyCode endpoint accessibilityAttempt to access or probe the autoLoginVerifyCode endpoint directly via HTTP/HTTPS request (e.g., GET/POST to the endpoint that handles CAPTCHA generation). Check if the endpoint returns valid CAPTCHA codes without session binding or rate limiting.Affected if The autoLoginVerifyCode endpoint returns valid CAPTCHA values without requiring prior session validation or proper captcha generation constraints
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Test CAPTCHA validation enforcementSubmit login attempts with the CAPTCHA code obtained from direct endpoint access. Observe whether the system accepts the CAPTCHA without proper session binding or one-time validation.Affected if CAPTCHA codes from direct endpoint access are accepted during authentication, indicating the bypass is present
If the environment runs iDS6 DSSPro version 6.2 and the autoLoginVerifyCode endpoint can be accessed directly to obtain valid CAPTCHA codes, the system is vulnerable to this CAPTCHA bypass.
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 dataImplement server-side CAPTCHA validation ensuring each CAPTCHA code is tied to the session and validated only once, combined with account lockout policies and rate limiting to prevent brute-force attempts.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
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Free · runs locallyCheck whether your project pulls in CVE-2020-37228 — 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-2020-37228 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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