Описание
lxml vulnerable to Cross-Site Scripting
An XSS vulnerability was discovered in the python lxml clean module versions before 4.6.3. When disabling the safe_attrs_only and forms arguments, the Cleaner class does not remove the formaction attribute allowing for JS to bypass the sanitizer. A remote attacker could exploit this flaw to run arbitrary JS code on users who interact with incorrectly sanitized HTML. This issue is patched in lxml 4.6.3.
Ссылки
- https://nvd.nist.gov/vuln/detail/CVE-2021-28957
- https://github.com/lxml/lxml/pull/316
- https://github.com/lxml/lxml/pull/316/commits/10ec1b4e9f93713513a3264ed6158af22492f270
- https://github.com/lxml/lxml/commit/2d01a1ba8984e0483ce6619b972832377f208a0d
- https://github.com/lxml/lxml/commit/a5f9cb52079dc57477c460dbe6ba0f775e14a999
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://www.debian.org/security/2021/dsa-4880
- https://security.netapp.com/advisory/ntap-20210521-0004
- https://security.gentoo.org/glsa/202208-06
- https://pypi.org/project/lxml
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XXN3QPWCTQVOGW4BMWV3AUUZZ4NRZNSQ
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3C2R44VDUY7FJVMAVRZ2WY7XYL4SVN45
- https://lists.debian.org/debian-lts-announce/2021/03/msg00031.html
- https://github.com/pypa/advisory-database/tree/main/vulns/lxml/PYSEC-2021-19.yaml
- https://github.com/advisories/GHSA-jq4v-f5q6-mjqq
- https://bugs.launchpad.net/lxml/+bug/1888153
Пакеты
lxml
< 4.6.3
4.6.3
Связанные уязвимости
An XSS vulnerability was discovered in python-lxml's clean module versions before 4.6.3. When disabling the safe_attrs_only and forms arguments, the Cleaner class does not remove the formaction attribute allowing for JS to bypass the sanitizer. A remote attacker could exploit this flaw to run arbitrary JS code on users who interact with incorrectly sanitized HTML. This issue is patched in lxml 4.6.3.
An XSS vulnerability was discovered in python-lxml's clean module versions before 4.6.3. When disabling the safe_attrs_only and forms arguments, the Cleaner class does not remove the formaction attribute allowing for JS to bypass the sanitizer. A remote attacker could exploit this flaw to run arbitrary JS code on users who interact with incorrectly sanitized HTML. This issue is patched in lxml 4.6.3.
An XSS vulnerability was discovered in python-lxml's clean module versions before 4.6.3. When disabling the safe_attrs_only and forms arguments, the Cleaner class does not remove the formaction attribute allowing for JS to bypass the sanitizer. A remote attacker could exploit this flaw to run arbitrary JS code on users who interact with incorrectly sanitized HTML. This issue is patched in lxml 4.6.3.
An XSS vulnerability was discovered in python-lxml's clean module vers ...