Staging
v0.8.1
https://github.com/python/cpython
Revision 69cdeeb93e0830004a495ed854022425b93b3f3e authored by Victor Stinner on 03 April 2020, 01:15:56 UTC, committed by GitHub on 03 April 2020, 01:15:56 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>
(cherry picked from commit 0b297d4ff1c0e4480ad33acae793fbaf4bf015b4)
1 parent ebeabb5
History
Tip revision: 69cdeeb93e0830004a495ed854022425b93b3f3e authored by Victor Stinner on 03 April 2020, 01:15:56 UTC
bpo-39503: CVE-2020-8492: Fix AbstractBasicAuthHandler (GH-18284) (GH-19304)
Tip revision: 69cdeeb
File Mode Size
NEWS.d
ACKS -rw-r--r-- 25.4 KB
HISTORY -rw-r--r-- 1.3 MB
Porting -rw-r--r-- 63 bytes
README -rw-r--r-- 1.4 KB
README.AIX -rw-r--r-- 5.0 KB
README.coverity -rw-r--r-- 845 bytes
README.valgrind -rw-r--r-- 4.5 KB
SpecialBuilds.txt -rw-r--r-- 10.0 KB
coverity_model.c -rw-r--r-- 4.1 KB
gdbinit -rw-r--r-- 4.7 KB
indent.pro -rw-r--r-- 557 bytes
python-config.in -rw-r--r-- 2.0 KB
python-config.sh.in -rw-r--r-- 2.9 KB
python-wing3.wpr -rw-r--r-- 555 bytes
python-wing4.wpr -rw-r--r-- 835 bytes
python-wing5.wpr -rw-r--r-- 835 bytes
python.man -rw-r--r-- 13.3 KB
python.pc.in -rw-r--r-- 293 bytes
svnmap.txt -rw-r--r-- 4.1 MB
valgrind-python.supp -rw-r--r-- 8.2 KB
vgrindefs -rw-r--r-- 500 bytes

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