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. This is similar to the CVE-2019-9740 query string issue and the CVE-2019-9947 path string issue. (This is not exploitable when glibc has CVE-2016-10739 fixed.). This is fixed in: v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1; v3.6.11, v3.6.11rc1, v3.6.12; v3.7.8, v3.7.8rc1, v3.7.9; v3.8.3, v3.8.3rc1, v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1.
2.7.12-1ubuntu0~16.04.113.5.2-2ubuntu0~16.04.102.7.17-1~18.04ubuntu13.6.9-1~18.04ubuntu13.8.2-1ubuntu1.12.7.6-8ubuntu0.6+esm53.4.3-1ubuntu1~14.04.7+esm63.5.2-2ubuntu0~16.04.4~14.04.1+esm13.7.5-2ubuntu1~18.04.2+esm33.8.0-3ubuntu1~18.04.2+esm2Exploitability
AV:NAC:LPR:NUI:RScope
S:CImpact
C:LI:LA:NCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N