CVE-2019-16935

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.

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.

Python is an interpreted, interactive, object-oriented programming language that supports modules, classes, exceptions, high-level dynamic data types, and dynamic typing. The python27 packages provide a stable release of Python 2.7 with a number of additional utilities and database connectors for MySQL and PostgreSQL.

The following packages have been upgraded to a later upstream version: python2 (2.7.17). (BZ#1759944)

Security Fix(es):

• python-urllib3: Cross-host redirect does not remove Authorization header allow for credential exposure (CVE-2018-20060)

• python: Cookie domain check returns incorrect results (CVE-2018-20852)

• 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)

• python: email.utils.parseaddr wrongly parses email addresses (CVE-2019-16056)

• python-requests: Redirect from HTTPS to HTTP does not remove Authorization header (CVE-2018-18074)

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 Rocky Linux 8.2 Release Notes linked from the References section.

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.

Python is an interpreted, interactive, object-oriented programming language that supports modules, classes, exceptions, high-level dynamic data types, and dynamic typing. The python27 packages provide a stable release of Python 2.7 with a number of additional utilities and database connectors for MySQL and PostgreSQL.

The following packages have been upgraded to a later upstream version: python2 (2.7.17). (BZ#1759944)

Security Fix(es):

• python-urllib3: Cross-host redirect does not remove Authorization header allow for credential exposure (CVE-2018-20060)

• python: Cookie domain check returns incorrect results (CVE-2018-20852)

• 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)

• python: email.utils.parseaddr wrongly parses email addresses (CVE-2019-16056)

• python-requests: Redirect from HTTPS to HTTP does not remove Authorization header (CVE-2018-18074)

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 AlmaLinux Release Notes linked from the References section.

Updated python and python3 packages fix security vulnerabilities:

An issue was discovered in urllib2 in Python 2.x through 2.7.16 and urllib in Python 3.x through 3.7.2. CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the first argument to urllib.request.urlopen with \r\n followed by an HTTP header or a Redis command (CVE-2019-9740).

An issue was discovered in urllib2 in Python 2.x through 2.7.16 and urllib in Python 3.x through 3.7.2. 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) followed by an HTTP header or a Redis command. This is similar to 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).

A security regression of CVE-2019-9636 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-2019-10160).

It was discovered that Python incorrectly parsed certain email addresses. A remote attacker could possibly use this issue to trick Python applications into accepting email addresses that should be denied (CVE-2019-16056).

It was discovered that the Python documentation XML-RPC server incorrectly handled certain fields. A remote attacker could use this issue to execute a cross-site scripting (XSS) attack (CVE-2019-16935).

This update for python fixes the following issues:

Security issues fixed:

• CVE-2019-9947: Fixed an insufficient validation of URL paths with embedded whitespace or control characters that could allow HTTP header injections. (bsc#1130840)
• 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).

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

This update for python fixes the following issues:

Security issues fixed:

• CVE-2019-9947: Fixed an insufficient validation of URL paths with embedded whitespace or control characters that could allow HTTP header injections. (bsc#1130840)
• 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).

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

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 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 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.

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(…).
• 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.

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(…).
• 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.

These are all security issues fixed in the python-2.7.18-8.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the python36-3.6.15-1.1 package on the GA media of openSUSE Tumbleweed.

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.

This update for python fixes the following issues:

Security issues fixed:

• CVE-2019-9947: Fixed an insufficient validation of URL paths with embedded whitespace or control characters that could allow HTTP header injections. (bsc#1130840)
• 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).

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).

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).

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 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 for python fixes the following issues:

Updated to version 2.7.17 to unify packages among openSUSE:Factory and SLE versions (bsc#1159035).

This update for python3 fixes the following issues:

• CVE-2019-20907: Fixed denial of service by avoiding possible infinite loop in specifically crafted tarball (bsc#1174091).
• CVE-2020-14422: Fixed an improper computation of hash values in the IPv4Interface and IPv6Interface could have led to denial of service (bsc#1173274).
• CVE-2019-16935: Fixed a reflected XSS in python/Lib/DocXMLRPCServer.py (bsc#1153238).
• CVE-2019-9947: Fixed an issue in urllib2 which allowed CRLF injection if the attacker controls a url parameter (bsc#1130840).
• If the locale is 'C', coerce it to C.UTF-8 (bsc#1162423).

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(…).
• 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.

It was discovered that Python incorrectly parsed certain email addresses. A remote attacker could possibly use this issue to trick Python applications into accepting email addresses that should be denied. (CVE-2019-16056)

It was discovered that the Python documentation XML-RPC server incorrectly handled certain fields. A remote attacker could use this issue to execute a cross-site scripting (XSS) attack. (CVE-2019-16935)

USN-4151-1 fixed several vulnerabilities in Python. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

It was discovered that Python incorrectly parsed certain email addresses. A remote attacker could possibly use this issue to trick Python applications into accepting email addresses that should be denied. (CVE-2019-16056)

It was discovered that the Python documentation XML-RPC server incorrectly handled certain fields. A remote attacker could use this issue to execute a cross-site scripting (XSS) attack. (CVE-2019-16935)

It was discovered that Python incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 18.04 LTS. (CVE-2015-20107)

It was discovered that Python incorrectly used regular expressions vulnerable to catastrophic backtracking. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2018-1060, CVE-2018-1061)

It was discovered that Python failed to initialize Expat’s hash salt. A remote attacker could possibly use this issue to cause hash collisions, leading to a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2018-14647)

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 14.04 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. This issue only affected Ubuntu 14.04 LTS. (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. This issue only affected Ubuntu 14.04 LTS. (CVE-2019-9636, CVE-2019-10160)

It was discovered that Python incorrectly parsed certain email addresses. A remote attacker could possibly use this issue to trick Python applications into accepting email addresses that should be denied. This issue only affected Ubuntu 14.04 LTS. (CVE-2019-16056)

It was discovered that the Python documentation XML-RPC server incorrectly handled certain fields. A remote attacker could use this issue to execute a cross-site scripting (XSS) attack. This issue only affected Ubuntu 14.04 LTS. (CVE-2019-16935)

It was discovered that Python documentation had a misleading information. A security issue could be possibly caused by wrong assumptions of this information. This issue only affected Ubuntu 14.04 LTS and Ubuntu 18.04 LTS. (CVE-2019-17514)

It was discovered that Python incorrectly stripped certain characters from requests. A remote attacker could use this issue to perform CRLF injection. This issue only affected Ubuntu 14.04 LTS and Ubuntu 18.04 LTS. (CVE-2019-18348)

It was discovered that Python incorrectly handled certain TAR archives. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 18.04 LTS. (CVE-2019-20907)

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 14.04 LTS. (CVE-2019-5010)

It was discovered that incorrectly handled certain ZIP files. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2019-9674)

It was discovered that Python incorrectly handled certain urls. A remote attacker could possibly use this issue to perform CRLF injection attacks. This issue only affected Ubuntu 14.04 LTS. (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 blocklist meschanisms. This issue only affected Ubuntu 14.04 LTS. (CVE-2019-9948)

It was discovered that Python incorrectly handled certain IP values. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 18.04 LTS. (CVE-2020-14422)

It was discovered that Python incorrectly handled certain character sequences. A remote attacker could possibly use this issue to perform CRLF injection. This issue only affected Ubuntu 14.04 LTS and Ubuntu…