CVE-2021-39152 Scanner

XStream is a popular library used for serializing Java objects to XML and back. It's widely used across various Java applications for data persistence and communication purposes. XStream's ease of use and flexibility make it a preferred choice for developers needing to serialize complex data structures. However, vulnerabilities like CVE-2021-39152 expose potential risks when untrusted XML data is processed, leading to unauthorized internal resource access through server-side request forgery (SSRF).

The vulnerability stems from XStream's handling of XML input that includes external entity references or specific data structures that can trigger internal HTTP requests. An attacker can manipulate these structures to cause the application to make unintended requests to internal services, bypassing network security measures designed to isolate sensitive components and data within a network.

Exploiting this vulnerability can lead to information disclosure, internal network scanning, and potentially unauthorized access to internal services. Attackers can leverage SSRF to bypass firewalls, access restricted information, and perform actions with the privileges of the application using XStream, potentially leading to a broader compromise of the internal network.

Joining securityforeveryone provides access to cutting-edge security scanning solutions that help identify and mitigate vulnerabilities like CVE-2021-39152 in XStream. Our platform enables users to conduct comprehensive security assessments, offering insights into potential security flaws and recommendations for enhancing your digital security posture. With securityforeveryone, you'll have the tools and support needed to protect your applications against evolving cybersecurity threats.

References

• https://x-stream.github.io/CVE-2021-39152.html
• https://github.com/x-stream/xstream/security/advisories/GHSA-xw4p-crpj-vjx2
• https://security.netapp.com/advisory/ntap-20210923-0003/
• https://nvd.nist.gov/vuln/detail/cve-2021-39152
• https://lists.debian.org/debian-lts-announce/2021/09/msg00017.html