TxawsApplication · Twistedmatrix

CVE-2017-1000007

MEDIUM · 5.9 CVSS v3.0 Published 2017-07-17
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
68/100
Remediation priority · Elevated
Remotely reachable No privileges Zero-click

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 · unedited
txAWS (all current versions) fail to perform complete certificate verification resulting in vulnerability to MitM attacks and information disclosure.

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 confidence

The txAWS library (all current versions) fails to perform complete SSL/TLS certificate verification, allowing Man-in-the-Middle attackers to intercept encrypted communications and disclose sensitive data by impersonating legitimate servers.

MitigationUpdate or patch txAWS to a version that implements proper certificate chain validation, hostname verification, and certificate expiration checking. Alternatively, migrate to a secure AWS SDK implementation.

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
TxawsApplication
Affected:all versions

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
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 checks

Work through these to decide whether this CVE applies to you.

  1. Check if txaws library is installed
    Run 'pip list' or check your Python environment for 'txaws' or 'txaws' package
    Affected if txaws is present in the Python environment and used for AWS connections
  2. Identify the txaws version
    Run 'pip show txaws' or check the installed package metadata for version information
    Affected if Any version of txaws is installed (all versions are affected)
  3. Check for SSL verification code in txaws
    Inspect the txaws source code, specifically looking for httplib or urllib calls with SSL context settings, or verify if ssl.create_default_context() or ssl.wrap_socket() is used with verify=False or no certificate validation
    Affected if The code shows ssl verification is disabled or incomplete (no hostname verification, no chain validation, or no expiration checking)
  4. Verify if applications use txaws for AWS connections
    Search project code for imports like 'from txaws import' or 'import txaws' and review how AWS service clients are instantiated
    Affected if Applications import and use txaws to connect to AWS services over HTTPS

If txaws is installed and used to make HTTPS connections to AWS services, the environment is affected by incomplete SSL/TLS certificate verification.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update or patch txAWS to a version that implements proper certificate chain validation, hostname verification, and certificate expiration checking. Alternatively, migrate to a secure AWS SDK implementation.

Fix this in Txaws Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,930
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2017-1000007 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • 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
  • No spam, self-promotion, credentials, or personal data