xstreamproject xstream CVE-2020-26217 vulnerability in Xstreamproject and Other Products
Published on November 16, 2020

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XStream before version 1.4.14 is vulnerable to Remote Code Execution.The vulnerability may allow a remote attacker to run arbitrary shell commands only by manipulating the processed input stream. Only users who rely on blocklists are affected. Anyone using XStream's Security Framework allowlist is not affected. The linked advisory provides code workarounds for users who cannot upgrade. The issue is fixed in version 1.4.14.

Github Repository Vendor Advisory NVD

Vulnerability Analysis

CVE-2020-26217 can be exploited with network access, requires user interaction and a small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
NETWORK
Attack Complexity:
HIGH
Privileges Required:
LOW
User Interaction:
REQUIRED
Scope:
CHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

What is a Shell injection Vulnerability?

The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

CVE-2020-26217 has been classified to as a Shell injection vulnerability or weakness.


Products Associated with CVE-2020-26217

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Affected Versions

x-stream xstream Version < 1.4.14 is affected by CVE-2020-26217

Vulnerable Packages

The following package name and versions may be associated with CVE-2020-26217

Package Manager Vulnerable Package Versions Fixed In
maven com.thoughtworks.xstream:xstream <= 1.4.13 1.4.14-jdk7

Exploit Probability

EPSS
93.17%
Percentile
99.78%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.