Java deserialization vulnerability - 20241015001¶
Overview¶
The WA SOC has been made aware of a vulnerability in Java security framework. The vulnerability affects systems that store externally controlled values in attributes of the UserProfile class from pac4j-core. An attacker can leverage this vulnerability to exploited an attribute that contains a serialized Java object with a special prefix {\#sb64} and Base64 encoding.
What is vulnerable?¶
| Product(s) Affected | Version(s) | CVE | CVSS | Severity |
|---|---|---|---|---|
| pac4j-core | < 4.0.0 | CVE-2023-25581 | 9.2 | Critical |
What has been observed?¶
There is no evidence of exploitation affecting Western Australian Government networks at the time of publishing.
Recommendation¶
The WA SOC recommends administrators apply the solutions as per vendor instructions to all affected devices within expected timeframe of 48 hours (refer Patch Management)