CVE-2019-18348

Advisory

Python 2.7.18rc1, 3.5.10rc1, 3.6.11rc1, 3.7.8rc1 and 3.8.3rc1 include a fix for CVE-2019-18348: 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.).
https://bugs.python.org/issue30458#msg347282

Affected package

Affected versions

Fixed versions

Vulnerability changelog

This vulnerability has no description

Resources

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18348
• https://bugs.python.org/issue30458#msg347282
• https://bugzilla.redhat.com/show_bug.cgi?id=1727276
• https://security.netapp.com/advisory/ntap-20191107-0004/
• https://lists.fedoraproject.org/archives/list/[email protected]/message/M34WOYCDKTDE5KLUACE2YIEH7D37KHRX/
• https://lists.fedoraproject.org/archives/list/[email protected]/message/JCPGLTTOBB3QEARDX4JOYURP6ELNNA2V/
• https://lists.fedoraproject.org/archives/list/[email protected]/message/4X3HW5JRZ7GCPSR7UHJOLD7AWLTQCDVR/
• https://usn.ubuntu.com/4333-1/
• https://usn.ubuntu.com/4333-2/
• http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00041.html
• https://lists.fedoraproject.org/archives/list/[email protected]/message/UESGYI5XDAHJBATEZN3MHNDUBDH47AS6/
• https://lists.fedoraproject.org/archives/list/[email protected]/message/A5NSAX4SC3V64PGZUPH7PRDLSON34Q5A/
• https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html
• https://www.oracle.com/security-alerts/cpuoct2020.html