CVE-2021-21345 PoC — XStream is vulnerable to a Remote Command Execution attack

Source

https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-21345.yaml

Associated Vulnerability

Title: XStream is vulnerable to a Remote Command Execution attack (CVE-2021-21345)
Description:XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability which may allow a remote attacker who has sufficient rights to execute commands of the host only by manipulating the processed input stream. 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.

Description

XStream before 1.4.16 is susceptible to remote code execution. An attacker who has sufficient rights can execute host commands via manipulating the processed input stream, thereby making it possible to obtain sensitive information, modify data, and/or execute unauthorized administrative operations.

File Snapshot

Remarks

1. It is advised to access via the original source first.

2. Local POC snapshots are reserved for subscribers — if the original source is unavailable, the local mirror is part of the paid plan.

View subscription plans →