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CVE-2021-21351 Scanner

Detects 'Remote Code Execution (RCE)' vulnerability in XStream affects v. before 1.4.16.


Short Info




Single Scan

Can be used by

Asset Owner

Estimated Time

10 sec

Scan only one

Domain, Ipv4

Parent Category

CVE-2021-21351 Scanner Detail

Vulnerability Overview:

CVE Identifier: CVE-2021-21351
Affected Versions: XStream before 1.4.16
Severity: Critical
Impact: Exploitation allows for arbitrary code execution, unauthorized data access, and potentially full system compromise.

Vulnerability Details:

CVE-2021-21351 stems from XStream's deserialization of untrusted data. The vulnerability is triggered when XStream processes specially crafted XML content, leading to the execution of arbitrary code by an attacker. Specifically, the flaw involves the manipulation of the processed input stream, which can exploit vulnerabilities in the XML parsing process. Attackers can craft malicious XML documents that, when processed by an application using a vulnerable version of XStream, execute arbitrary code under the context of the application.

The nature of this vulnerability underscores the complexities of safely deserializing XML content and highlights the importance of scrutinizing external input. This vulnerability is particularly insidious because it can be exploited remotely without requiring authentication, allowing an attacker to leverage the vulnerability simply by convincing a user or automated process to process a malicious XML document.

The Importance of Mitigating CVE-2021-21351:

The mitigation of CVE-2021-21351 is paramount for several reasons. Firstly, remote code execution vulnerabilities offer attackers the ability to execute commands on a victim's system, potentially leading to a full system compromise. In the context of web applications, this could result in unauthorized access to sensitive information, the alteration or destruction of data, or the deployment of further malicious software within the network.

Furthermore, the exploitation of this vulnerability can undermine the trust in the security of applications utilizing XStream for XML processing. As applications often process XML data received from various sources, including untrusted external entities, the risk of exploitation is significantly heightened. Addressing this vulnerability not only protects the application and its data but also preserves the integrity and confidentiality of user information processed by the application.

Why SecurityForEveryone?

SecurityForEveryone provides a specialized CVE-2021-21351 Scanner, empowering organizations to quickly identify and rectify this critical vulnerability in their use of XStream. Our solution combines advanced scanning technology with expert insights, enabling comprehensive vulnerability management and the fortification of your cybersecurity defenses.



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