The Apache Struts REST Plugin is using XStream library which is vulnerable and allow perform a DoS attack when using a malicious request with specially crafted XML payload. Upgrade to the Apache Struts version 2.5.16 and switch to an optional Jackson XML handler as described here http://struts.apache.org/plugins/rest/#custom-contenttypehandlers. Another option is to implement a custom XML handler based on the Jackson XML handler from the Apache Struts 2.5.16.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2018-1327 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue did not affect any of the Red Hat products as they did not include the Apache Struts 2 package.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 7.5 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | None |
| Availability Impact | High |
| Platform | Package | State |
|---|---|---|
| Red Hat Satellite 5 | struts | Not affected |
| Red Hat JBoss Operations Network 3 | struts | Not affected |
| Red Hat JBoss Operations Network 2 | struts | Not affected |
| Red Hat JBoss Fuse Service Works 6 | struts | Not affected |
| Red Hat JBoss Data Virtualization 6 | struts | Not affected |
| Red Hat Enterprise Linux 5 | struts | Not affected |
Vulmon