Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
Required
Privileges Required
None
Attack Vector
Network
0

CVE-2021-43818

Disclosure Date: December 13, 2021
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

lxml is a library for processing XML and HTML in the Python language. Prior to version 4.6.5, the HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs. Users that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5 to receive a patch. There are no known workarounds available.

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CVSS V3 Severity and Metrics
Base Score:
7.1 High
Impact Score:
3.7
Exploitability Score:
2.8
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
Required
Scope (S):
Changed
Confidentiality (C):
Low
Integrity (I):
Low
Availability (A):
Low

General Information

Vendors

  • debian,
  • fedoraproject,
  • lxml,
  • netapp,
  • oracle

Products

  • communications cloud native core binding support function 22.1.3,
  • communications cloud native core network exposure function 22.1.1,
  • communications cloud native core policy 22.2.0,
  • debian linux 10.0,
  • debian linux 11.0,
  • debian linux 9.0,
  • fedora 34,
  • fedora 35,
  • hci storage node firmware -,
  • http server 12.2.1.3.0,
  • http server 12.2.1.4.0,
  • lxml,
  • solidfire -,
  • solidfire enterprise sds -,
  • zfs storage appliance kit 8.8

References

Additional Info

Technical Analysis