Vulnerability CVE-2019-9740
Published: 2019-03-12   Modified: 2019-03-13

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 query string after a ? character) followed by an HTTP header or a Redis command.

Type:

CWE-93

 (Improper Neutralization of CRLF Sequences ('CRLF Injection'))

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Python -> Python 

 References:
http://www.securityfocus.com/bid/107466
https://access.redhat.com/errata/RHSA-2019:1260
https://bugs.python.org/issue36276
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JMWSKTNOHSUOT3L25QFJAVCFYZX46FYK/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JXASHCDD4PQFKTMKQN4YOP5ZH366ABN4/
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