Python 2.7.17 is a bug fix release in the Python 2.7.x series. It is expected to be the penultimate release for Python 2.7.

https://www.python.org/downloads/release/python-2717/

  - Security fix for CVE-2018-20852.

  - Security fix for CVE-2019-16056.

  - Security fix for CVE-2019-16935.

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 python3 to 3.6.9 fixes the following issues :

Security issues fixed :

  - CVE-2019-16056: Fixed a parser issue in the email     module. (bsc#1149955)

  - CVE-2019-16935: Fixed a reflected XSS in     python/Lib/DocXMLRPCServer.py (bsc#1153238).

Non-security issues fixed :

  - Fixed regression of OpenSSL 1.1.1b-1 in EVP_PBE_scrypt()     with salt=NULL. (bsc#1151490)

  - Improved locale handling by implementing PEP 538.

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

This update for python fixes the following issues :

Security issue fixed :

CVE-2019-16056: Fixed a parser issue in the email module (bsc#1149955).

CVE-2019-16935: Fixed a reflected XSS in python/Lib/DocXMLRPCServer.py (bsc#1153238).

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

An update of the python2 package has been released.

An update of the python3 package has been released.

This update for python3 fixes the following issues :

  - Fixed CVE-2020-27619 (bsc#1178009), where     Lib/test/multibytecodec_support calls eval() on content     retrieved via HTTP.

  - Change setuptools and pip version numbers according to     new wheels

  - Handful of changes to make python36 compatible with     SLE15 and SLE12 (jsc#ECO-2799, jsc#SLE-13738)

  - add triplets for mips-r6 and riscv

  - RISC-V needs CTYPES_PASS_BY_REF_HACK

Update to 3.6.12 (bsc#1179193)

  - Ensure python3.dll is loaded from correct locations when     Python is embedded

  - The __hash__() methods of ipaddress.IPv4Interface and     ipaddress.IPv6Interface incorrectly generated constant     hash values of 32 and 128 respectively. This resulted in     always causing hash collisions. The fix uses hash() to     generate hash values for the tuple of (address, mask     length, network address).

  - Prevent http header injection by rejecting control     characters in http.client.putrequest(&hellip;).

  - Unpickling invalid NEWOBJ_EX opcode with the C     implementation raises now UnpicklingError instead of     crashing.

  - Avoid infinite loop when reading specially crafted TAR     files using the tarfile module

  - This release also fixes CVE-2020-26116 (bsc#1177211) and     CVE-2019-20907 (bsc#1174091).

Update to 3.6.11 :

  - Disallow CR or LF in email.headerregistry. Address     arguments to guard against header injection attacks.

  - Disallow control characters in hostnames in http.client,     addressing CVE-2019-18348. Such potentially malicious     header injection URLs now cause a InvalidURL to be     raised. (bsc#1155094)

  - CVE-2020-8492: The AbstractBasicAuthHandler class of the     urllib.request module uses an inefficient regular     expression which can be exploited by an attacker to     cause a denial of service. Fix the regex to prevent the     catastrophic backtracking. Vulnerability reported by Ben     Caller and Matt Schwager.

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

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2020:4433 advisory.

  - 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)

  - In Lib/tarfile.py in Python through 3.8.3, an attacker is able to craft a TAR archive leading to an     infinite loop when opened by tarfile.open, because _proc_pax lacks header validation. (CVE-2019-20907)

  - Python 2.7 through 2.7.17, 3.5 through 3.5.9, 3.6 through 3.6.10, 3.7 through 3.7.6, and 3.8 through 3.8.1     allows an HTTP server to conduct Regular Expression Denial of Service (ReDoS) attacks against a client     because of urllib.request.AbstractBasicAuthHandler catastrophic backtracking. (CVE-2020-8492)

  - Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and     IPv6Interface classes, which might allow a remote attacker to cause a denial of service if an application     is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects, and this     attacker can cause many dictionary entries to be created. This is fixed in: v3.5.10, v3.5.10rc1; v3.6.12;
    v3.7.9; v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1; v3.9.0, v3.9.0b4, v3.9.0b5, v3.9.0rc1, v3.9.0rc2.
    (CVE-2020-14422)

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

This update for python3 to version 3.6.10 fixes the following issues :

CVE-2017-18207: Fixed a denial of service in Wave_read._read_fmt_chunk() (bsc#1083507).

CVE-2019-16056: Fixed an issue where email parsing could fail for multiple @ (bsc#1149955).

CVE-2019-15903: Fixed a heap-based buffer over-read in libexpat (bsc#1149429).

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

Multiple security issues were discovered in Python, an interactive high-level object-oriented language.

CVE-2018-20406

Modules/_pickle.c has an integer overflow via a large LONG_BINPUT value that is mishandled during a 'resize to twice the size' attempt.
This issue might cause memory exhaustion, but is only relevant if the pickle format is used for serializing tens or hundreds of gigabytes of data.

CVE-2018-20852

http.cookiejar.DefaultPolicy.domain_return_ok in Lib/http/cookiejar.py 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 server with a hostname that has another valid hostname as a suffix (e.g., pythonicexample.com to steal cookies for example.com).
When a program uses http.cookiejar.DefaultPolicy and tries to do an HTTP connection to an attacker-controlled server, existing cookies can be leaked to the attacker.

CVE-2019-5010

An exploitable denial of service vulnerability exists in the X509 certificate parser. A specially crafted X509 certificate can cause a NULL pointer dereference, resulting in a denial of service. An attacker can initiate or accept TLS connections using crafted certificates to trigger this vulnerability.

CVE-2019-9636

Improper Handling of Unicode Encoding (with an incorrect netloc) during NFKC normalization. The impact is: Information disclosure (credentials, cookies, etc. that are cached against a given hostname).
The components are: urllib.parse.urlsplit, urllib.parse.urlparse. The attack vector is: 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. 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. 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 was discovered in python, 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.

CVE-2019-16056

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-2019-16935

The documentation XML-RPC server has XSS via the server_title field.
This occurs in Lib/xmlrpc/server.py. 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-2019-18348

An issue was discovered in urllib2. 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

CVE-2020-8492

Python allows an HTTP server to conduct Regular Expression Denial of Service (ReDoS) attacks against a client because of urllib.request.AbstractBasicAuthHandler catastrophic backtracking.

CVE-2020-14422

Lib/ipaddress.py improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects, and this attacker can cause many dictionary entries to be created.

For Debian 9 stretch, these problems have been fixed in version 3.5.3-1+deb9u2.

We recommend that you upgrade your python3.5 packages.

For the detailed security status of python3.5 please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/python3.5

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.

This update for python3 to version 3.6.10 fixes the following issues :

  - CVE-2017-18207: Fixed a denial of service in     Wave_read._read_fmt_chunk() (bsc#1083507).

  - CVE-2019-16056: Fixed an issue where email parsing could     fail for multiple @ (bsc#1149955).

  - CVE-2019-15903: Fixed a heap-based buffer over-read in     libexpat (bsc#1149429).

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

ID	Name	Product	Family	Published	Updated	Severity
130789	Fedora 30 : python2 / python2-docs (2019-74ba24605e)	Nessus	Fedora Local Security Checks	11/12/2019	4/12/2024	high
130790	Fedora 29 : python2 / python2-docs (2019-758824a3ff)	Nessus	Fedora Local Security Checks	11/12/2019	4/12/2024	high
130886	openSUSE Security Update : python3 (openSUSE-2019-2453)	Nessus	SuSE Local Security Checks	11/12/2019	4/12/2024	high
130943	SUSE SLES12 Security Update : python (SUSE-SU-2019:2748-2)	Nessus	SuSE Local Security Checks	11/13/2019	4/11/2024	high
130579	openSUSE Security Update : python3 (openSUSE-2019-2438)	Nessus	SuSE Local Security Checks	11/6/2019	4/15/2024	high
130114	Photon OS 2.0: Python2 PHSA-2019-2.0-0182	Nessus	PhotonOS Local Security Checks	10/22/2019	4/17/2024	medium
130115	Photon OS 2.0: Python3 PHSA-2019-2.0-0182	Nessus	PhotonOS Local Security Checks	10/22/2019	4/17/2024	medium
145326	openSUSE Security Update : python3 (openSUSE-2020-2332)	Nessus	SuSE Local Security Checks	1/25/2021	1/26/2024	critical
157686	AlmaLinux 8 : python3 (ALSA-2020:4433)	Nessus	Alma Linux Local Security Checks	2/9/2022	11/10/2023	medium
164584	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.19.1)	Nessus	Misc.	9/1/2022	4/18/2024	critical
133036	SUSE SLED15 / SLES15 Security Update : python3 (SUSE-SU-2020:0114-1) (BEAST) (httpoxy)	Nessus	SuSE Local Security Checks	1/17/2020	3/29/2024	critical
138529	Debian DLA-2280-1 : python3.5 security update	Nessus	Debian Local Security Checks	7/16/2020	3/1/2024	critical
133172	openSUSE Security Update : python3 (openSUSE-2020-86) (BEAST) (httpoxy)	Nessus	SuSE Local Security Checks	1/22/2020	3/29/2024	critical

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