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Debian Security Advisory 4811-1

Debian Security Advisory 4811-1
Posted Dec 28, 2020
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4811-1 - 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.

tags | advisory, java, arbitrary, shell
systems | linux, debian
advisories | CVE-2020-26217
SHA-256 | acffd9ece540f4f9dd8e304dae118a6e0bebb805b838cb208f08a33a7fc074a7

Debian Security Advisory 4811-1

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- -------------------------------------------------------------------------
Debian Security Advisory DSA-4811-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
December 15, 2020 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

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
https://github.com/x-stream/xstream/security/advisories/GHSA-mw36-7c6c-q4q2

For the stable distribution (buster), this problem has been fixed in
version 1.4.11.1-1+deb10u1.

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:
https://security-tracker.debian.org/tracker/libxstream-java

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: debian-security-announce@lists.debian.org
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