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VuXML IDDescription
ca595a25-91d8-11ea-b470-080027846a02Python -- CRLF injection via the host part of the url passed to urlopen()

Python reports:

An issue was discovered in urllib2 in Python 2.x through 2.7.17 and urllib in Python 3.x through 3.8.0. CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the first argument to urllib.request.urlopen with \r\n (specifically in the host component of a URL) followed by an HTTP header.


Discovery 2019-10-24
Entry 2020-05-09
Modified 2020-06-13
python27
lt 2.7.18

python38
lt 3.8.3

python37
le 3.7.7

python36
lt 3.6.10

python35
le 3.5.9_4

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18348
https://bugs.python.org/issue38576
CVE-2019-18348
a27b0bb6-84fc-11ea-b5b4-641c67a117d8Python -- Regular Expression DoS attack against client

Ben Caller and Matt Schwager reports:

Python 2.7 through 2.7.17, 3.5 through 3.5.9, 3.6 through 3.6.10, 3.7 through 3.7.6, and 3.8 through 3.8.1 allows an HTTP server to conduct Regular Expression Denial of Service (ReDoS) attacks against a client because of urllib.request.AbstractBasicAuthHandler catastrophic backtracking.


Discovery 2019-11-17
Entry 2020-04-23
Modified 2020-06-13
python38
lt 3.8.3

python37
le 3.7.7

python36
lt 3.6.10

python35
le 3.5.9_4

python27
lt 2.7.18

https://python-security.readthedocs.io/vuln/urllib-basic-auth-regex.html
https://bugs.python.org/issue39503
CVE-2020-8492
ports/245819