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Debian Security Advisory DSA-4811-1                   [email protected]
https://www.debian.org/security/                       Moritz Muehlenhoff
December 15, 2020                     https://www.debian.org/security/faq
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Package        : libxstream-java
CVE ID         : CVE-2020-26217

It was discovered that the default blacklist of XStream, a Java library
to serialise objects to XML and back again, was vulnerable to the
execution of arbitrary shell commands by manipulating the processed
input stream.

For additional defense-in-depth it is recommended to switch to the
whitelist approach of XStream's security framework. For additional
information please refer to

For the stable distribution (buster), this problem has been fixed in

We recommend that you upgrade your libxstream-java packages.

For the detailed security status of libxstream-java please refer to
its security tracker page at:

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: [email protected]