CVE-2021-32543
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 · uneditedThe CTS Web transaction system related to authentication management is implemented incorrectly. After login, remote attackers can manipulate cookies to access other accounts and trade in the stock market with spoofed identity.
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 confidenceThe CTS Web transaction system has improper authentication management that allows remote attackers to manipulate session cookies after login to access other user accounts and conduct unauthorized stock trades. This is a session hijacking/impersonation vulnerability where user identity is not properly bound to the session.
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< 2021.3.24CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/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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Identify the installed Cts Web versionLocate the application version information in the system about page, main header, or version file. For web apps, this may be visible in the login page source, API responses, or a /version endpoint.Affected if The installed version is any release prior to 2021.3.24 (e.g., 2021.2.x, 2021.1.x, etc.)
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Inspect session cookie configurationLog into the application and use browser developer tools (Application > Cookies) or a proxy to capture the session cookie. Examine the Set-Cookie headers for presence of HttpOnly, Secure, and SameSite attributes.Affected if The session cookie lacks one or more of these security attributes: HttpOnly, Secure, SameSite, or the SameSite value is set to None without Secure=true
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Verify session binding to user identityCapture two different user sessions and compare the session cookie values. Check if the session contains or validates user-specific identifiers (user ID, account ID) in a way that prevents cross-account reuse.Affected if Session cookies can be exchanged between different user accounts without rejection, indicating missing user-specific session binding
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Test for session hijacking vulnerabilityAfter logging in as User A, copy the session cookie and attempt to use it while logged in as User B, or after User B logs in. Check if the application accepts the foreign session cookie to impersonate User A.Affected if The application accepts a session cookie from one user account while authenticated as another user, allowing session hijacking across accounts
The environment is affected if Sysjust Cts Web version is below 2021.3.24 AND the session cookies lack proper security attributes OR user-specific session binding is not enforced.
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 data2021.3.24
Implement proper session management with secure cookie attributes (HttpOnly, Secure, SameSite), validate session integrity, and enforce user-specific session binding to prevent cross-account cookie manipulation.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-32543 — 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-2021-32543 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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