SB2020121623 - Multiple vulnerabilities in XStream

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Input validation error (CVE-ID: CVE-2020-26259)

The vulnerability allows a remote attacker to delete arbitrary files on the system.

The vulnerability exists due to insufficient validation of user-supplied input within the blacklisting feature. A remote attacker can pass specially crafted input to the application and delete arbitrary files on the system.

2) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2020-26258)

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.

Remediation

Install update from vendor's website.

References

• https://github.com/x-stream/xstream/security/advisories/GHSA-jfvx-7wrx-43fh
• https://x-stream.github.io/CVE-2020-26259.html
• https://github.com/x-stream/xstream/security/advisories/GHSA-4cch-wxpw-8p28
• https://x-stream.github.io/CVE-2020-26258.html