Amazon Linux AMI Security Advisory: ALAS-2019-1243
Advisory Release Date: 2019-07-17 23:51 Pacific
Advisory Updated Date: 2019-07-25 18:45 Pacific
An issue was discovered in urllib2 in Python 2.x and urllib in Python 3.x. 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 query string after a ? character) followed by an HTTP header or a Redis command. (CVE-2019-9740, CVE-2019-9947)
Python 2.7.x and 3.x are affected by: Improper Handling of Unicode Encoding (with an incorrect netloc) during NFKC normalization. The impact is: Information disclosure (credentials, cookies, etc. that are cached against a given hostname). The components are: urllib.parse.urlsplit, urllib.parse.urlparse. The attack vector is: A specially crafted URL could be incorrectly parsed to locate cookies or authentication data and send that information to a different host than when parsed correctly. (CVE-2019-9636)
Run yum update python35 to update your system.