ALT-PU-2021-1529-1
Package python3-module-lxml updated to version 4.6.3-alt1 for branch sisyphus in task 268152.
Closed vulnerabilities
Published: 2020-07-19
BDU:2021-03119
Уязвимость класса Cleaner библиотеки для обработки разметки XML и HTML Lxml, позволяющая нарушителю выполнить произвольный Java Script-код
Severity: MEDIUM (6.1)
Vector: AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
References:
Published: 2021-03-21
Modified: 2024-11-21
Modified: 2024-11-21
CVE-2021-28957
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.
Severity: MEDIUM (6.1)
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
References:
- https://bugs.launchpad.net/lxml/+bug/1888153
- https://bugs.launchpad.net/lxml/+bug/1888153
- https://github.com/lxml/lxml/commit/a5f9cb52079dc57477c460dbe6ba0f775e14a999
- https://github.com/lxml/lxml/commit/a5f9cb52079dc57477c460dbe6ba0f775e14a999
- https://github.com/lxml/lxml/pull/316/commits/10ec1b4e9f93713513a3264ed6158af22492f270
- https://github.com/lxml/lxml/pull/316/commits/10ec1b4e9f93713513a3264ed6158af22492f270
- [debian-lts-announce] 20210324 [SECURITY] [DLA 2606-1] lxml security update
- [debian-lts-announce] 20210324 [SECURITY] [DLA 2606-1] lxml security update
- FEDORA-2021-28723f9670
- FEDORA-2021-28723f9670
- FEDORA-2021-4cdb0f68c7
- FEDORA-2021-4cdb0f68c7
- GLSA-202208-06
- GLSA-202208-06
- https://security.netapp.com/advisory/ntap-20210521-0004/
- https://security.netapp.com/advisory/ntap-20210521-0004/
- DSA-4880
- DSA-4880
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://www.oracle.com/security-alerts/cpuoct2021.html