CVE-2021-21343

XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability where the processed stream at unmarshalling time contains type information to recreate the formerly written objects. XStream creates therefore new instances based on these type information. An attacker can manipulate the processed input stream and replace or inject objects, that result in the deletion of a file on the local host. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.16.

Affected products

Alt Linux, Astra Linux, Linuxmint, Suse, Ubuntu, Xstream

Netapp Oncommand Insight

All versions

Fix

Available

CVSS 3.1

7.5 HIGH

EPSS

46.7% (99th percentile)

Weakness

CWE-73, CWE-502

NVD status

Analyzed

Published

2021-03-22

No exploit for CVE-2021-21343 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.