CVE-2018-19443
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 client in Tryton 5.x before 5.0.1 tries to make a connection to the bus in cleartext instead of encrypted under certain circumstances in bus.py and jsonrpc.py. This connection attempt fails, but it contains in the header the current session of the user. This session could then be stolen by a man-in-the-middle.
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 confidenceIn Tryton 5.x before 5.0.1, the client incorrectly attempts to connect to the message bus using an unencrypted (cleartext) connection instead of an encrypted one. Although this connection attempt fails, the HTTP header in the failed request includes the user's active session token. An attacker performing a man-in-the-middle attack could capture this session token from the cleartext header and hijack the user's 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= 5.0.0CVSS 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
- None
- Availability
- None
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/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 Tryton client versionRun 'tryton --version' or check the installed package version using your system's package managerAffected if The installed version is exactly 5.0.0 (any version before 5.0.1 is affected)
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Inspect network traffic for message bus connectionUse a network sniffer or proxy to monitor outgoing connections from the Tryton clientAffected if You observe failed connection attempts to the message bus using cleartext (non-TLS) HTTP
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Capture HTTP headers in failed connection attemptsWhile monitoring network traffic, examine the HTTP headers of the failed cleartext requestsAffected if The HTTP headers contain the user's active session token (e.g., Cookie or Authorization header) in cleartext
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Check client configuration for encryption settingsReview Tryton client configuration files or preferences for message bus connection settingsAffected if The client is configured to attempt cleartext connections to the message bus instead of requiring TLS/SSL
You are affected if the Tryton client version is 5.0.0 and you observe cleartext connection attempts to the message bus that expose session tokens in HTTP headers.
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 dataUpgrade to Tryton 5.0.1 or later. Until then, avoid using Tryton on untrusted networks where MITM attacks are possible, as session tokens may be exposed in failed cleartext connection attempts.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 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 $2,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-19443 — 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-2018-19443 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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