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redhat/automation-huburllib3 is vulnerable to a denial of service, caused by a regular expression denial of service (ReDo…

Risk 46

Severity

7.5

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Impact

When provided with a URL containing many @ characters in the authority component the authority regular expression exhibits catastrophic backtracking causing a denial of service if a URL were passed as a parameter or redirected to via an HTTP redirect.

Patches

The issue has been fixed in urllib3 v1.26.5.

References

- CVE-2021-33503 - JVNVU#92413403 (English) - JVNVU#92413403 (Japanese) - urllib3 v1.26.5

For more information If you have any questions or comments about this advisory: Ask in our community Discord Email sethmichaellarson@gmail.com

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Source: GitHub

First published (updated )

CVE-2021-33503

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