CVE-2019-9947

MEDIUM

Description

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.

References

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00062.html

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00063.html

http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html

https://access.redhat.com/errata/RHSA-2019:1260

https://access.redhat.com/errata/RHSA-2019:2030

https://access.redhat.com/errata/RHSA-2019:3335

https://access.redhat.com/errata/RHSA-2019:3520

https://access.redhat.com/errata/RHSA-2019:3725

https://bugs.python.org/issue35906

https://lists.debian.org/debian-lts-announce/2019/06/msg00022.html

https://lists.debian.org/debian-lts-announce/2019/06/msg00023.html

https://lists.debian.org/debian-lts-announce/2019/06/msg00026.html

https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html

https://lists.debian.org/debian-lts-announce/2020/08/msg00034.html

https://lists.fedoraproject.org/archives/list/[email protected]/message/JMWSKTNOHSUOT3L25QFJAVCFYZX46FYK/

https://lists.fedoraproject.org/archives/list/[email protected]/message/JXASHCDD4PQFKTMKQN4YOP5ZH366ABN4/

https://security.gentoo.org/glsa/202003-26

https://security.netapp.com/advisory/ntap-20190404-0004/

https://usn.ubuntu.com/4127-1/

https://usn.ubuntu.com/4127-2/

Details

Source: MITRE

Published: 2019-03-23

Updated: 2020-08-22

Type: CWE-93

Risk Information

CVSS v2.0

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3.0

Base Score: 6.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Impact Score: 2.7

Exploitability Score: 2.8

Severity: MEDIUM