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Advisories

Tornado before 6.5.7 Credential Leak via Handle Reuse

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severity
high
date
Affecting

  • tornado >= 0, < 6.5.7

CWE
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CVSS
8.2
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Description
Tornado before 6.5.7 contains a credential leak vulnerability in CurlAsyncHTTPClient where pycurl handles are reused across requests without proper state clearing. Attackers can obtain sensitive credentials by issuing requests through the same client instance, allowing TLS certificates or proxy authentication to persist across unintended requests.

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