There's a flaw in urllib's AbstractBasicAuthHandler class. An attacker who controls a malicious HTTP server that an HTTP client (such as web browser) connects to, could trigger a Regular Expression Denial of Service (ReDOS) during an authentication request with a specially crafted payload that is sent by the server to the client. The greatest threat that this flaw poses is to application availability.
Platform | Package | Release Date | Advisory |
---|---|---|---|
Amazon Linux 2 - Core | python | 2022-05-31 23:50 | ALAS2-2022-1802 |
Amazon Linux 1 | python27 | 2022-05-31 23:47 | ALAS-2022-1593 |
Score Type | Score | Vector | |
---|---|---|---|
Amazon Linux | CVSSv3 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
NVD | CVSSv2 | 4.0 | AV:N/AC:L/Au:S/C:N/I:N/A:P |
NVD | CVSSv3 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |