CVE-2020-27783

A XSS vulnerability was discovered in python-lxml's clean module. The module's parser didn't properly imitate browsers, which caused different behaviors between the sanitizer and the user's page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code.

A XSS vulnerability was discovered in python-lxml's clean module. The module's parser didn't properly imitate browsers, which caused different behaviors between the sanitizer and the user's page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code.

A XSS vulnerability was discovered in python-lxml's clean module. The module's parser didn't properly imitate browsers, which caused different behaviors between the sanitizer and the user's page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code.

The lxml XML toolkit is a Pythonic binding for the C libraries libxml2 and libxslt. It is unique in that it combines the speed and XML feature completeness of these libraries with the simplicity of a native Python API, mostly compatible but superior to the well-known ElementTree API. The latest release works with all CPython versions from 2.7 to 3.7.

Security Fix(es):

A XSS vulnerability was discovered in python-lxml's clean module. The module's parser didn't properly imitate browsers, which caused different behaviors between the sanitizer and the user's page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code.(CVE-2020-27783)

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.

Security Fix(es):

• python: CRLF injection via HTTP request method in httplib/http.client (CVE-2020-26116)

• python-urllib3: CRLF injection via HTTP request method (CVE-2020-26137)

• python-lxml: mXSS due to the use of improper parser (CVE-2020-27783)

• python: Stack-based buffer overflow in PyCArg_repr in _ctypes/callproc.c (CVE-2021-3177)

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 8.4 Release Notes linked from the References section.

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems.

Security Fix(es):

• python: CRLF injection via HTTP request method in httplib/http.client (CVE-2020-26116)

• python-lxml: mXSS due to the use of improper parser (CVE-2020-27783)

• python: Stack-based buffer overflow in PyCArg_repr in _ctypes/callproc.c (CVE-2021-3177)

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 8.4 Release Notes linked from the References section.

lxml is an XML processing library providing access to libxml2 and libxslt libraries using the Python ElementTree API.

Security Fix(es):

• python-lxml: mXSS due to the use of improper parser (CVE-2020-27783)

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 8.4 Release Notes linked from the References section.

A XSS vulnerability was discovered in python-lxml's clean module. The module's parser didn't properly imitate browsers, which caused different behaviors between the sanitizer and the user's page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code.

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.

Security Fix(es):

• python: CRLF injection via HTTP request method in httplib/http.client (CVE-2020-26116)

• python-urllib3: CRLF injection via HTTP request method (CVE-2020-26137)

• python-lxml: mXSS due to the use of improper parser (CVE-2020-27783)

• python: Stack-based buffer overflow in PyCArg_repr in _ctypes/callproc.c (CVE-2021-3177)

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.

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems.

Security Fix(es):

• python: CRLF injection via HTTP request method in httplib/http.client (CVE-2020-26116)

• python-lxml: mXSS due to the use of improper parser (CVE-2020-27783)

• python: Stack-based buffer overflow in PyCArg_repr in _ctypes/callproc.c (CVE-2021-3177)

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.

A XSS vulnerability was discovered in python-lxml's clean module. The module's parser didn't properly imitate browsers, which caused different behaviors between the sanitizer and the user's page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code. (CVE-2020-27783).

This update for python-lxml fixes the following issues:

• CVE-2018-19787: Fixed XSS vulnerability via unescaped URL (bsc#1118088).
• CVE-2021-28957: Fixed XSS vulnerability ia HTML5 attributes unescaped (bsc#1184177).
• CVE-2021-43818: Fixed XSS vulnerability via script content in SVG images using data URIs (bnc#1193752).
• CVE-2020-27783: Fixed mutation XSS with improper parser use (bnc#1179534).

These are all security issues fixed in the python-lxml-doc-4.6.3-3.2 package on the GA media of openSUSE Tumbleweed.

A XSS vulnerability was discovered in python-lxml's clean module. The module's parser didn't properly imitate browsers, which caused different behaviors between the sanitizer and the user's page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code.

This feature update for venv-salt-minion provides the following changes:

• Introduce venv-salt-minion.
• Track already fixed issues.

This feature update for venv-salt-minion provides the following changes:

• Introduce venv-salt-minion.
• Mention fixed issues provided with the bundle.

This update for python-lxml fixes the following issues:

• CVE-2018-19787: Fixed XSS vulnerability via unescaped URL (bsc#1118088).
• CVE-2021-28957: Fixed XSS vulnerability ia HTML5 attributes unescaped (bsc#1184177).
• CVE-2021-43818: Fixed XSS vulnerability via script content in SVG images using data URIs (bnc#1193752).
• CVE-2020-27783: Fixed mutation XSS with improper parser use (bnc#1179534).

This update for python-lxml fixes the following issues:

• CVE-2021-43818: Removed SVG image data URLs since they can embed script content (bsc#1193752).
• CVE-2021-28957: Fixed a potential XSS due to improper input sanitization (bsc#1184177).
• CVE-2020-27783: Fixed a potential XSS due to improper HTML parsing (bsc#1179534).
• CVE-2018-19787: Fixed a potential XSS due to improper input sanitization (bsc#1118088).

This update for ardana-barbican, grafana, openstack-barbican, openstack-cinder, openstack-heat-gbp, openstack-horizon-plugin-gbp-ui, openstack-ironic, openstack-keystone, openstack-neutron-gbp, python-lxml, release-notes-suse-openstack-cloud fixes the following issues:

Security fixes included on the update:

ardana-barbican:

• Update policies to protect container secret access (SOC-11621)
• Update policies to protect secret metadata access (SOC-11620)

openstack-neutron:

• CVE-2021-40085: Fixed arbitrary dnsmasq reconfiguration via extra_dhcp_opts (bsc#1189794).

rubygem-sinatra:

• CVE-2022-29970: Fixed path traversal possible outside of public_dir when serving static files (bsc#1199138).

python-XStatic-jquery-ui:

• CVE-2021-41182: Fixed XSS in the altField option of the Datepicker widget (bsc#1192070)
• CVE-2021-41183: Fixed XSS in the of option of the .position() util (bsc#1192073)
• CVE-2021-41184: Fixed XSS in *Text options of the Datepicker widget (bsc#1192075)

python-lxml:

• CVE-2018-19787: Fixed that the lxml.html.clean module does remove javascript in lxml/html/clean.py (bsc#1118088).
• CVE-2020-27783: Fixed mXSS due to the use of improper parser (bsc#1179534).
• CVE-2021-28957: Fixed missing input sanitization for formaction HTML5 attributes that may have led to XSS (bsc#1184177).
• CVE-2021-43818: Fixed HTML Cleaner that allowed crafted and SVG embedded scripts to pass through (bsc#1193752).

openstack-barbican:

• CVE-2022-23451: Disallows authenticated users to add/modify/delete arbitrary metadata on any secret (bsc#1194952).
• CVE-2022-23452: Disallows anyone with an admin role to add their secrets to a different project's containers (bsc#1194954).

grafana:

• CVE-2021-44716: Fixed net/http: limit growth of header canonicalization cache (bsc#1193597).

openstack-keystone:

• CVE-2021-38155: Fixed information disclosure during account locking (bsc#1189390).

Non-security fixes included on the update:

Changes in ardana-barbican:

• Update to version 9.0+git.1644879908.8a641c1:

  • Update policies to protect container secret access (SOC-11621)

• Update to version 9.0+git.1643052417.9a3348e:

  • update policies to protect secret metadata access (SOC-11620)

Changes in grafana:

• Add CVE-2021-43813.patch (bsc#1193688, CVE-2021-43813)

  • directory traversal vulnerability for .md files

• Bump Go to 1.16 (bsc#1193597, CVE-2021-44716)

  • Fix Go net/http: limit growth of header canonicalization cache

Changes in openstack-barbican:

• Add patches (0001-Fix-RBAC-and-ACL-access-for-managing-secret-containe.patch and 0001-Fix-policy-for-adding-a-secret-to-a-container.patch) to fix the legacy policy rules for adding a secret to a container and removing a secret from a container. bsc#1194954,CVE-2022-23452

• Add patch (0001-Fix-secret-metadata-access-rules.patch) to fix the legacy policy rules for accessing secret metadata by checking that the user making the request is authenticated for the project that owns the secret. bsc#1194952,CVE-2022-23451

Changes in openstack-cinder:

• Update to version cinder-13.0.10.dev24:
  • Correct group:reset_group_snapshot_status policy

Changes in openstack-cinder:

• Update to version cinder-13.0.10.dev24:
  • Correct group:reset_group_snapshot_status policy

Changes in openstack-heat-gbp:

• Update to version group-based-policy-automation-14.0.1.dev4:

  • Add support for yoga

• Update to version group-based-policy-automation-14.0.1.dev3:

  • Python2/3 compatibility fixes

• Update to version group-based-policy-automation-14.0.1.dev2:

  • Add support for xena

• Update to version group-based-policy-automation-14.0.1.dev1:

  • Remove py27 from gate jobs 14.0.0

Changes in openstack-horizon-plugin-gbp-ui:

• Update to version group-based-policy-ui-14.0.1.dev3:

  • Add support for yoga

• Update to version group-based-policy-ui-14.0.1.dev2:

  • Python2/3 compatibility changes

• Update to version group-based-policy-ui-14.0.1.dev1:

  • Add support for xena …

This update for python3-lxml fixes the following issues:

• CVE-2020-27783: Fixed XSS due to the use of improper parser (bsc#1179534).

This update for python3-lxml fixes the following issues:

• CVE-2020-27783: Fixed XSS due to the use of improper parser (bsc#1179534).

This update for python-lxml fixes the following issues:

• CVE-2021-28957: Fixed XSS due to missing input sanitization for HTML5 attributes (bsc#1184177).
• CVE-2020-27783: Fixed XSS due to the use of improper parser (bsc#1179534).

It was discovered that lxml incorrectly handled certain HTML. An attacker could possibly use this issue to cross-site scripting (XSS) attacks.

USN-4666-1 partially fixed a vulnerability in lxml, but an additional patch was needed. This update provides the corresponding additional patch in order to properly fix the vulnerability.

Original advisory details:

It was discovered that lxml incorrectly handled certain HTML. An attacker could possibly use this issue to cross-site scripting (XSS) attacks.