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

CVE-2021-43859

Disclosure Date: February 01, 2022 •
CVE-2021-43859 CVSS v3 Base Score: 7.5
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

XStream is an open source java library to serialize objects to XML and back again. Versions prior to 1.4.19 may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. XStream 1.4.19 monitors and accumulates the time it takes to add elements to collections and throws an exception if a set threshold is exceeded. Users are advised to upgrade as soon as possible. Users unable to upgrade may set the NO_REFERENCE mode to prevent recursion. See GHSA-rmr5-cpv2-vgjf for further details on a workaround if an upgrade is not possible.

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CVSS V3 Severity and Metrics
Base Score:
7.5 High
Impact Score:
3.6
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
xstream < 1.4.19
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • debian,
  • fedoraproject,
  • oracle,
  • xstream project

Products

  • commerce guided search 11.3.2,
  • communications brm - elastic charging engine,
  • communications brm - elastic charging engine 12.0.0.5.0,
  • communications cloud native core automated test suite 1.9.0,
  • communications diameter intelligence hub,
  • communications policy management 12.6.0.0.0,
  • debian linux 9.0,
  • fedora 34,
  • fedora 35,
  • flexcube private banking 12.1.0,
  • retail xstore point of service 16.0.6,
  • retail xstore point of service 17.0.4,
  • retail xstore point of service 18.0.3,
  • retail xstore point of service 19.0.2,
  • retail xstore point of service 20.0.1,
  • xstream
Technical Analysis