CVE-2020-8492

An uncontrolled resource consumption vulnerability was discovered in python in the class AbstractBasicAuthHandler, due to the kind of regular expression used while handling an authentication request in the http_error_auth_reqed method. Client applications that use, directly or indirectly, AbstractBasicAuthHandler to connect to a malicious server may be vulnerable to this flaw, which would cause an uncontrolled use of CPU resources on the victim's system, resulting in a Denial of Service.

Applications that use AbstractBasicAuthHandler, HTTPBasicAuthHandler and ProxyBasicAuthHandler may be affected by this flaw. Other classes may use the vulnerable method http_error_auth_reqed in AbstractBasicAuthHandler as well.

Versions of python36:3.6/python36 as shipped with Red Hat Enterprise Linux 8 are marked as notaffected as they just provide "symlinks" to the main python3 component, which provides the actual interpreter of the Python programming language.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.