An issue was discovered in urllib2 in Python 2.x through 2.7.16 and urllib in Python 3.x through 3.7.3. 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 path component of a URL that lacks a ? character) followed by an HTTP header or a Redis command. This is similar to the CVE-2019-9740 query string issue.
MLIST:[debian-lts-announce] 20190625 [SECURITY] [DLA 1834-1] python2.7 security update
MLIST:[debian-lts-announce] 20190625 [SECURITY] [DLA 1835-1] python3.4 security update
MLIST:[debian-lts-announce] 20190625 [SECURITY] [DLA 1835-2] python3.4 regression update
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