Vulnerability CVE-2019-9947


Published: 2019-03-23

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.

Type:

CWE-93

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

Vendor: Python
Product: Python 
Version:
3.7.2
3.7.1
3.7.0
3.7
3.6.7
3.6.6
3.6.5
3.6.4
3.6.3
3.6.2
3.6.1
3.6.0
3.6
3.5.6
3.5.5
3.5.4
3.5.3
3.5.2
3.5.1
3.5.0
3.5
3.4.9
3.4.7
3.4.6
3.4.5
3.4.4
3.4.3
3.4.2
3.4.1
3.4.0
3.4
3.3.7
3.3.6
3.3.5
3.3.4
3.3.3
3.3.2
3.3.1
3.3.0
3.3
3.2.6
3.2.5
3.2.4
3.2.3
3.2.2150
3.2.2
3.2.1
3.2.0
3.2
3.1.5
3.1.4
3.1.3
3.1.2150
3.1.2
3.1.1
3.1.0
3.1
3.0.1
3.0.0
2.7.9
2.7.8
2.7.7
2.7.6
2.7.5
2.7.4
2.7.3
2.7.2
2.7.16
2.7.15
2.7.14
2.7.13
2.7.12
2.7.11
2.7.10
2.7.1
2.7.0
2.7
2.6.9
2.6.8
2.6.7
2.6.6150
2.6.6
2.6.5
2.6.4
2.6.3
2.6.2150
2.6.2
2.6.1
2.6.0
2.6
2.5.6
2.5.5
2.5.4
2.5.3
2.5.2
2.5.150
2.5.1
2.5.0
2.5
2.4.6
See more versions on NVD

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

 References:
https://access.redhat.com/errata/RHSA-2019:1260
https://bugs.python.org/issue35906
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/
https://security.netapp.com/advisory/ntap-20190404-0004/

Related CVE
CVE-2019-10138
A flaw was discovered in the python-novajoin plugin, all versions up to, excluding 1.1.1, for Red Hat OpenStack Platform. The novajoin API lacked sufficient access control, allowing any keystone authenticated user to generate FreeIPA tokens.
CVE-2018-20852
http.cookiejar.DefaultPolicy.domain_return_ok in Lib/http/cookiejar.py in Python before 3.7.3 does not correctly validate the domain: it can be tricked into sending existing cookies to the wrong server. An attacker may abuse this flaw by using a serv...
CVE-2019-13404
** DISPUTED ** The MSI installer for Python through 2.7.16 on Windows defaults to the C:\Python27 directory, which makes it easier for local users to deploy Trojan horse code. (This also affects old 3.x releases before 3.5.) NOTE: the vendor's positi...
CVE-2019-10160
A security regression of CVE-2019-9636 was discovered in python since commit d537ab0ff9767ef024f26246899728f0116b1ec3 affecting versions 2.7, 3.5, 3.6, 3.7 and from v3.8.0a4 through v3.8.0b1, which still allows an attacker to exploit CVE-2019-9636 by...
CVE-2019-12761
A code injection issue was discovered in PyXDG before 0.26 via crafted Python code in a Category element of a Menu XML document in a .menu file. XDG_CONFIG_DIRS must be set up to trigger xdg.Menu.parse parsing within the directory containing this fil...
CVE-2019-11324
The urllib3 library before 1.24.2 for Python mishandles certain cases where the desired set of CA certificates is different from the OS store of CA certificates, which results in SSL connections succeeding in situations where a verification failure i...
CVE-2019-11236
In the urllib3 library through 1.24.1 for Python, CRLF injection is possible if the attacker controls the request parameter.
CVE-2019-9948
urllib in Python 2.x through 2.7.16 supports the local_file: scheme, which makes it easier for remote attackers to bypass protection mechanisms that blacklist file: URIs, as demonstrated by triggering a urllib.urlopen('local_file:///etc/passwd') call...

Copyright 2019, cxsecurity.com

 

Back to Top