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

CVE-2021-21342

Disclosure Date: March 23, 2021
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability where the processed stream at unmarshalling time contains type information to recreate the formerly written objects. XStream creates therefore new instances based on these type information. An attacker can manipulate the processed input stream and replace or inject objects, that result in a server-side forgery request. No user is affected, who followed the recommendation to setup XStream’s security framework with a whitelist limited to the minimal required types. If you rely on XStream’s default blacklist of the Security Framework, you will have to use at least version 1.4.16.

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CVSS V3 Severity and Metrics
Base Score:
9.1 Critical
Impact Score:
5.2
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
None

General Information

Vendors

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

Products

  • banking enterprise default management 2.10.0,
  • banking enterprise default management 2.12.0,
  • banking platform 2.12.0,
  • banking platform 2.4.0,
  • banking platform 2.7.1,
  • banking platform 2.9.0,
  • banking virtual account management 14.2.0,
  • banking virtual account management 14.3.0,
  • banking virtual account management 14.5.0,
  • business activity monitoring 11.1.1.9.0,
  • business activity monitoring 12.2.1.3.0,
  • business activity monitoring 12.2.1.4.0,
  • communications brm - elastic charging engine 12.0.0.3,
  • communications policy management 12.5.0,
  • communications unified inventory management 7.3.2,
  • communications unified inventory management 7.3.4,
  • communications unified inventory management 7.3.5,
  • communications unified inventory management 7.4.0,
  • communications unified inventory management 7.4.1,
  • debian linux 10.0,
  • debian linux 11.0,
  • debian linux 9.0,
  • fedora 33,
  • fedora 34,
  • fedora 35,
  • 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,
  • webcenter portal 11.1.1.9.0,
  • webcenter portal 12.2.1.3.0,
  • webcenter portal 12.2.1.4.0,
  • xstream

References

Additional Info

Technical Analysis