CVE-2022-41966 – com.thoughtworks.xstream:xstream

Package

Manager: maven
Name: com.thoughtworks.xstream:xstream
Vulnerable Version: >=0 <1.4.20

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS: 0.12002 pctl0.93529

Details

XStream can cause Denial of Service via stack overflow ### Impact The vulnerability may allow a remote attacker to terminate the application with a stack overflow error resulting in a denial of service only by manipulating the processed input stream. ### Patches XStream 1.4.20 handles the stack overflow and raises an InputManipulationException instead. ### Workarounds The attack uses the hash code implementation for collections and maps to force recursive hash calculation causing a stack overflow. Following types of the Java runtime are affected: - java.util.HashMap - java.util.HashSet - java.util.Hashtable - java.util.LinkedHashMap - java.util.LinkedHashSet - Other third party collection implementations that use their element's hash code may also be affected A simple solution is to catch the StackOverflowError in the client code calling XStream. If your object graph does not use referenced elements at all, you may simply set the NO_REFERENCE mode: ```Java XStream xstream = new XStream(); xstream.setMode(XStream.NO_REFERENCES); ``` If your object graph contains neither a Hashtable, HashMap nor a HashSet (or one of the linked variants of it) then you can use the security framework to deny the usage of these types: ```Java XStream xstream = new XStream(); xstream.denyTypes(new Class[]{ java.util.HashMap.class, java.util.HashSet.class, java.util.Hashtable.class, java.util.LinkedHashMap.class, java.util.LinkedHashSet.class }); ``` Unfortunately these types are very common. If you only use HashMap or HashSet and your XML refers these only as default map or set, you may additionally change the default implementation of java.util.Map and java.util.Set at unmarshalling time:: ```Java xstream.addDefaultImplementation(java.util.TreeMap.class, java.util.Map.class); xstream.addDefaultImplementation(java.util.TreeSet.class, java.util.Set.class); ``` However, this implies that your application does not care about the implementation of the map and all elements are comparable. ### References See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for [CVE-2022-41966](https://x-stream.github.io/CVE-2022-41966.html). ### For more information If you have any questions or comments about this advisory: * Open an issue in [XStream](https://github.com/x-stream/xstream/issues) * Contact us at [XStream Google Group](https://groups.google.com/group/xstream-user)

Metadata

Created: 2022-12-29T01:48:08Z
Modified: 2022-12-29T01:48:08Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/12/GHSA-j563-grx4-pjpv/GHSA-j563-grx4-pjpv.json
CWE IDs: ["CWE-120", "CWE-121", "CWE-502", "CWE-674"]
Alternative ID: GHSA-j563-grx4-pjpv
Finding: F316
Auto approve: 1