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[email protected]CVE-2021-21342

HistoryMar 23, 2021 - 12:15 a.m.

CVE-2021-21342

2021-03-2300:15:12

CWE-502

CWE-918

[email protected]

web.nvd.nist.gov

318

xstream

java

library

vulnerability

cve-2021-21342

serialization

xml

unmarshalling

type information

security framework

whitelist

5.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:P/A:N

9.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

9.2 High

AI Score

Confidence

High

0.007 Low

EPSS

Percentile

80.2%

JSON

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.

Affected configurations

Vulners

NVD

Node

x-streamxstreamRange<1.4.16

CPENameOperatorVersion
xstream_project:xstreamxstream project xstreamlt1.4.16

CPE	Name	Operator	Version
xstream_project:xstream	xstream project xstream	lt	1.4.16

CNA Affected

[
  {
    "product": "xstream",
    "vendor": "x-stream",
    "versions": [
      {
        "status": "affected",
        "version": "< 1.4.16"
      }
    ]
  }
]