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[email protected]CVE-2021-21343

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

CVE-2021-21343

2021-03-2300:15:12

CWE-502

CWE-73

[email protected]

web.nvd.nist.gov

315

xstream

java

library

cve-2021-21343

vulnerability

security

xml

serialization

unmarshalling

type information

file deletion

nvd

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

8.2 High

AI Score

Confidence

High

0.004 Low

EPSS

Percentile

73.0%

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 the deletion of a file on the local host. 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"
      }
    ]
  }
]