SB2018102314 - Code Injection in Oschina Fastjson

Description

This security bulletin contains information about 1 security vulnerability.

1) Code Injection (CVE-ID: CVE-2017-18349)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation in a crafted JSON request, as demonstrated by a crafted rmi:// URI in the dataSourceName field of HTTP POST data to the Pippo /json URI, which is mishandled in AjaxApplication.java. A remote attacker can send a specially crafted request and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• https://fortiguard.com/encyclopedia/ips/44059
• https://github.com/alibaba/fastjson/wiki/security_update_20170315
• https://github.com/pippo-java/pippo/issues/466