6.1

CVE-2021-28957

Exploit
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Lxml ≫ Lxml Version < 4.6.3
Debian ≫ Debian Linux Version 9.0
Debian ≫ Debian Linux Version 10.0
Fedoraproject ≫ Fedora Version 33
Fedoraproject ≫ Fedora Version 34
Netapp ≫ Snapcenter Version -
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 4% 0.892
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 6.1 2.8 2.7
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NIST 4.3 8.6 2.9
AV:N/AC:M/Au:N/C:N/I:P/A:N
CISA-ADP 6.1 2.8 2.7
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

https://www.oracle.com/security-alerts/cpuoct2021.html
Patch
Third Party Advisory
https://bugs.launchpad.net/lxml/+bug/1888153
Third Party Advisory
Exploit
Issue Tracking
https://github.com/lxml/lxml/commit/a5f9cb52079dc57477c460dbe6ba0f775e14a999
Patch
Third Party Advisory
https://github.com/lxml/lxml/pull/316/commits/10ec1b4e9f93713513a3264ed6158af22492f270
Patch
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00031.html
Third Party Advisory
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3C2R44VDUY7FJVMAVRZ2WY7XYL4SVN45/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XXN3QPWCTQVOGW4BMWV3AUUZZ4NRZNSQ/
https://security.gentoo.org/glsa/202208-06
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210521-0004/
Third Party Advisory
https://www.debian.org/security/2021/dsa-4880
Third Party Advisory