CVE-2021-39153 XStream is vulnerable to an Arbitrary Code Execution attack

2021-08-2317:55:14

CWE-434

CWE-502

GitHub_M

www.cve.org

xstream

vulnerability

arbitrary code execution

remote attacker

input stream

java runtime

security framework

whitelist

CVSS3

8.5

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

9.1

Confidence

High

EPSS

0.03

Percentile

91.1%

JSON

XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream, if using the version out of the box with Java runtime version 14 to 8 or with JavaFX installed. No user is affected, who followed the recommendation to setup XStream’s security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.

CNA Affected

[
  {
    "product": "xstream",
    "vendor": "x-stream",
    "versions": [
      {
        "status": "affected",
        "version": "< 1.4.18 "
      }
    ]
  }
]