CVE-2021-21240 log

Source
Severity Medium
Remote Yes
Type Denial of service
Description
In python-httplib2 before version 0.19.0, a malicious server which responds with long series of "\xa0" characters in the "www-authenticate" header may cause Denial of Service (CPU burn while parsing header) of the httplib2 client accessing said server. This is fixed in version 0.19.0 which contains a new implementation of auth headers parsing using the pyparsing library.
Group Package Affected Fixed Severity Status Ticket
AVG-1546 python-httplib2 0.18.1-4 0.19.0-1 Medium Fixed
References
https://github.com/httplib2/httplib2/security/advisories/GHSA-93xj-8mrv-444m
https://github.com/httplib2/httplib2/pull/182
https://github.com/httplib2/httplib2/commit/bd9ee252c8f099608019709e22c0d705e98d26bc
Notes
Workaround
==========

The issue can be mitigated by using "httplib2.USE_WWW_AUTH_STRICT_PARSING = True".