QID 981862

QID 981862: Python (pip) Security Update for uvicorn (GHSA-33c7-2mpw-hg34)

This affects all versions of package uvicorn. The request logger provided by the package is vulnerable to ASNI escape sequence injection. Whenever any HTTP request is received, the default behaviour of uvicorn is to log its details to either the console or a log file. When attackers request crafted URLs with percent-encoded escape sequences, the logging component will log the URL after it's been processed with urllib.parse.unquote, therefore converting any percent-encoded characters into their single-character equivalent, which can have special meaning in terminal emulators. By requesting URLs with crafted paths, attackers can: * Pollute uvicorn's access logs, therefore jeopardising the integrity of such files. * Use ANSI sequence codes to attempt to interact with the terminal emulator that's displaying the logs (either in real time or from a file).

Successful exploitation of this vulnerability may affect the confidentiality, integrity, and availability of the targeted user.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as Medium - 5 severity.
    • Solution
    Customers are advised to refer to GHSA-33c7-2mpw-hg34 for updates pertaining to this vulnerability.
    Vendor References

    CVEs related to QID 981862

    CVE-2020-7694 |
    Software Advisories
    Advisory ID Software Component Link
    GHSA-33c7-2mpw-hg34 uvicorn URL Logo github.com/advisories/GHSA-33c7-2mpw-hg34
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