CVE-2021-21348

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Summary:

XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability which may allow a remote attacker to occupy a thread that consumes maximum CPU time and will never return. 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.

Reference Links(if available):

  • http://x-stream.github.io/changes.html#1.4.16
  • https://x-stream.github.io/security.html#workaround
  • https://github.com/x-stream/xstream/security/advisories/GHSA-56p8-3fh9-4cvq
  • https://x-stream.github.io/CVE-2021-21348.html
  • https://lists.debian.org/debian-lts-announce/2021/04/msg00002.html
  • CVSS Score (if available)

    v2: / MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:C

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

    Links to Exploits(if available)