REDHAT-BUG-2428203: Alibaba fastjson vulnerability
Fastjson before 1.2.48 mishandles autoType because, when an @type key is in a JSON document, and the value of that key is the name of a Java class, there may be calls to certain public methods of that class. Depending on the behavior of those methods, there may be JNDI injection with an attacker-supplied payload located elsewhere in that JSON document. This was exploited in the wild in 2023 through 2025. NOTE: this issue exists because of an incomplete fix for CVE-2017-18349. Also, a later bypass is covered by CVE-2022-25845.
Affected Software
Event History
Frequently Asked Questions
What is the severity of REDHAT-BUG-2428203?
The severity of REDHAT-BUG-2428203 is rated at 92.
How do I fix REDHAT-BUG-2428203?
To fix REDHAT-BUG-2428203, upgrade Fastjson to version 1.2.48 or later.
What vulnerabilities are associated with REDHAT-BUG-2428203?
REDHAT-BUG-2428203 is associated with vulnerabilities CVE-2017-18349 and CVE-2022-25845.
What is affected by REDHAT-BUG-2428203?
REDHAT-BUG-2428203 affects Alibaba Fastjson versions prior to 1.2.48.
What type of injection is possible with REDHAT-BUG-2428203?
REDHAT-BUG-2428203 may lead to JNDI injection due to mishandling of autoType.