The version of Ansible Tower running on the remote web server is 3.3.x prior to 3.3.6, 3.4.x prior to 3.4.4, or 3.5.x prior to 3.5.1. It is, therefore, affected by a CRLF injection vulnerability in the urllib2 library of python 2.x through 2.7.16 & python 3.x through 3.7.3.

According to the versions of the python packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - An issue was discovered in Python through 2.7.16, 3.x     through 3.5.7, 3.6.x through 3.6.9, and 3.7.x through     3.7.4. The email module wrongly parses email addresses     that contain multiple @ characters. An application that     uses the email module and implements some kind of     checks on the From/To headers of a message could be     tricked into accepting an email address that should be     denied. An attack may be the same as in CVE-2019-11340     however, this CVE applies to Python more     generally.(CVE-2019-16056)

  - 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 \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.(CVE-2019-9947)

  - 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 \n (specifically in the     query string after a ? character) followed by an HTTP     header or a Redis command.(CVE-2019-9740)

  - The documentation XML-RPC server in Python through     2.7.16, 3.x through 3.6.9, and 3.7.x through 3.7.4 has     XSS via the server_title field. This occurs in     Lib/DocXMLRPCServer.py in Python 2.x, and in     Lib/xmlrpc/server.py in Python 3.x. If set_server_title     is called with untrusted input, arbitrary JavaScript     can be delivered to clients that visit the http URL for     this server.(CVE-2019-16935)

  - library/glob.html in the Python 2 and 3 documentation     before 2016 has potentially misleading information     about whether sorting occurs, as demonstrated by     irreproducible cancer-research results. NOTE: the     effects of this documentation cross application     domains, and thus it is likely that security-relevant     code elsewhere is affected. This issue is not a Python     implementation bug, and there are no reports that NMR     researchers were specifically relying on     library/glob.html. In other words, because the older     documentation stated 'finds all the pathnames matching     a specified pattern according to the rules used by the     Unix shell,' one might have incorrectly inferred that     the sorting that occurs in a Unix shell also occurred     for glob.glob. There is a workaround in newer versions     of Willoughby nmr-data_compilation-p2.py and     nmr-data_compilation-p3.py, which call sort()     directly.(CVE-2019-17514)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has python packages installed that are affected by multiple vulnerabilities:

  - Python's elementtree C accelerator failed to initialise     Expat's hash salt during initialization. This could make     it easy to conduct denial of service attacks against     Expat by constructing an XML document that would cause     pathological hash collisions in Expat's internal data     structures, consuming large amounts CPU and RAM. Python     3.8, 3.7, 3.6, 3.5, 3.4, 2.7 are believed to be     vulnerable. (CVE-2018-14647)

  - 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  (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.
    (CVE-2019-9947)

  - 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.
    (CVE-2019-9948)

  - 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  (specifically in the     query string after a ? character) followed by an HTTP     header or a Redis command. (CVE-2019-9740)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

An update for the python27:2.7 module is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Python is an interpreted, interactive, object-oriented programming language that supports modules, classes, exceptions, high-level dynamic data types, and dynamic typing.

Security Fix(es) :

* numpy: crafted serialized object passed in numpy.load() in pickle python module allows arbitrary code execution (CVE-2019-6446)

* python: CRLF injection via the query part of the url passed to urlopen() (CVE-2019-9740)

* python: CRLF injection via the path part of the url passed to urlopen() (CVE-2019-9947)

* python: Undocumented local_file protocol allows remote attackers to bypass protection mechanisms (CVE-2019-9948)

* python-urllib3: CRLF injection due to not encoding the '\r\n' sequence leading to possible attack on internal service (CVE-2019-11236)

* python-urllib3: Certification mishandle when error should be thrown (CVE-2019-11324)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes :

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.1 Release Notes linked from the References section.

It was discovered that Python incorrectly handled certain pickle files. An attacker could possibly use this issue to consume memory, leading to a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2018-20406)

It was discovered that Python incorrectly validated the domain when handling cookies. An attacker could possibly trick Python into sending cookies to the wrong domain. (CVE-2018-20852)

Jonathan Birch and Panayiotis Panayiotou discovered that Python incorrectly handled Unicode encoding during NFKC normalization. An attacker could possibly use this issue to obtain sensitive information. (CVE-2019-9636, CVE-2019-10160)

Colin Read and Nicolas Edet discovered that Python incorrectly handled parsing certain X509 certificates. An attacker could possibly use this issue to cause Python to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.
(CVE-2019-5010)

It was discovered that Python incorrectly handled certain urls. A remote attacker could possibly use this issue to perform CRLF injection attacks. (CVE-2019-9740, CVE-2019-9947)

Sihoon Lee discovered that Python incorrectly handled the local_file:
scheme. A remote attacker could possibly use this issue to bypass blacklist meschanisms. (CVE-2019-9948).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Multiple vulnerabilities were discovered in Python, an interactive high-level object-oriented language, including 

CVE-2018-14647

Python's elementtree C accelerator failed to initialise Expat's hash salt during initialization. This could make it easy to conduct denial of service attacks against Expat by constructing an XML document that would cause pathological hash collisions in Expat's internal data structures, consuming large amounts CPU and RAM.

CVE-2019-5010

NULL pointer dereference using a specially crafted X509 certificate.

CVE-2019-9636

Improper Handling of Unicode Encoding (with an incorrect netloc) during NFKC normalization resulting in information disclosure (credentials, cookies, etc. that are cached against a given hostname).
A specially crafted URL could be incorrectly parsed to locate cookies or authentication data and send that information to a different host than when parsed correctly.

CVE-2019-9740

An issue was discovered in urllib2 where 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.

CVE-2019-9947

An issue was discovered in urllib2 where 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.

CVE-2019-9948

urllib 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.

CVE-2019-10160

A security regression of CVE-2019-9636 was discovered which still allows an attacker to exploit CVE-2019-9636 by abusing the user and password parts of a URL. When an application parses user-supplied URLs to store cookies, authentication credentials, or other kind of information, it is possible for an attacker to provide specially crafted URLs to make the application locate host-related information (e.g. cookies, authentication data) and send them to a different host than where it should, unlike if the URLs had been correctly parsed.
The result of an attack may vary based on the application.

For Debian 8 'Jessie', these problems have been fixed in version 2.7.9-2+deb8u3.

We recommend that you upgrade your python2.7 packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Python 3.5 has now entered 'security fixes only' mode, and as such the only changes since Python 3.5.4 are security fixes.

https://www.python.org/downloads/release/python-358/

https://docs.python.org/3.5/whatsnew/changelog.html#python-3-5-8

Security fix for CVE-2019-9740, CVE-2019-10160, CVE-2019-16935, CVE-2019-18348 , CVE-2019-16056.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Security fix for CVE-2019-9740 and CVE-2019-9947. Fix a regression introduced by the fix for CVE-2019-9636. Add manual page link for python3.7m.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for python-urllib3 fixes the following issues :

Security issues fixed :

  - CVE-2019-9740: Fixed CRLF injection issue (bsc#1129071).

  - CVE-2019-11324: Fixed invalid CA certificat verification     (bsc#1132900).

  - CVE-2019-11236: Fixed CRLF injection via request     parameter (bsc#1132663).

  - CVE-2018-20060: Remove Authorization header when     redirecting cross-host (bsc#1119376).

This update was imported from the SUSE:SLE-15:Update update project.

ID	Name	Product	Family	Published	Updated	Severity
127127	Ansible Tower 3.3.x < 3.3.6 / 3.4.x < 3.4.4 / 3.5.x < 3.5.1 CRLF Vulnerability	Nessus	CGI abuses	8/5/2019	4/11/2022	medium
134741	EulerOS Virtualization 3.0.2.2 : python (EulerOS-SA-2020-1275)	Nessus	Huawei Local Security Checks	3/20/2020	3/21/2024	high
129884	NewStart CGSL CORE 5.04 / MAIN 5.04 : python Multiple Vulnerabilities (NS-SA-2019-0187)	Nessus	NewStart CGSL Local Security Checks	10/15/2019	4/18/2024	critical
130527	RHEL 8 : python27:2.7 (RHSA-2019:3335)	Nessus	Red Hat Local Security Checks	11/6/2019	4/16/2024	critical
128631	Ubuntu 16.04 LTS / 18.04 LTS : Python vulnerabilities (USN-4127-1)	Nessus	Ubuntu Local Security Checks	9/10/2019	10/20/2023	critical
126222	Debian DLA-1834-1 : python2.7 security update	Nessus	Debian Local Security Checks	6/25/2019	1/11/2021	critical
130797	Fedora 29 : python35 (2019-d202cda4f8)	Nessus	Fedora Local Security Checks	11/12/2019	4/12/2024	critical
125229	Fedora 30 : python3 (2019-1ffd6b6064)	Nessus	Fedora Local Security Checks	5/17/2019	1/15/2020	critical
128864	openSUSE Security Update : python-urllib3 (openSUSE-2019-2131)	Nessus	SuSE Local Security Checks	9/16/2019	4/25/2024	critical

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