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v0.5.1
v0.5.1
https://github.com/python/cpython
Revision b57a73694e26e8b2391731b5ee0b1be59437388e authored by Miss Islington (bot) on 02 April 2020, 10:16:17 UTC, committed by GitHub on 02 April 2020, 10:16:17 UTC
The AbstractBasicAuthHandler class of the urllib.request module uses an inefficient regular expression which can be exploited by an attacker to cause a denial of service. Fix the regex to prevent the catastrophic backtracking. Vulnerability reported by Ben Caller and Matt Schwager. AbstractBasicAuthHandler of urllib.request now parses all WWW-Authenticate HTTP headers and accepts multiple challenges per header: use the realm of the first Basic challenge. Co-Authored-By: Serhiy Storchaka <storchaka@gmail.com> Co-authored-by: Victor Stinner <vstinner@python.org> (cherry picked from commit 0b297d4ff1c0e4480ad33acae793fbaf4bf015b4)
1 parent 8e069fc
Tip revision: b57a73694e26e8b2391731b5ee0b1be59437388e authored by Miss Islington (bot) on 02 April 2020, 10:16:17 UTC
bpo-39503: CVE-2020-8492: Fix AbstractBasicAuthHandler (GH-18284) (GH-19297)
bpo-39503: CVE-2020-8492: Fix AbstractBasicAuthHandler (GH-18284) (GH-19297)
Tip revision: b57a736
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