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AUSCERT External Security Bulletin Redistribution
ESB-2021.0019
libxstream-java security update
4 January 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: libxstream-java
Publisher: Debian
Operating System: Debian GNU/Linux
Impact/Access: Delete Arbitrary Files -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-26259 CVE-2020-26258
Original Bulletin:
https://www.debian.org/lts/security/2020/dla-2507
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Debian LTS Advisory DLA-2507-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Markus Koschany
December 31, 2020 https://wiki.debian.org/LTS
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Package : libxstream-java
Version : 1.4.11.1-1+deb9u1
CVE ID : CVE-2020-26258 CVE-2020-26259
Debian Bug : 977625 977624
Several security vulnerabilities were discovered in XStream, a Java library to
serialize objects to XML and back again.
CVE-2020-26258
XStream is vulnerable to a Server-Side Forgery Request which can be
activated when unmarshalling. The vulnerability may allow a remote attacker
to request data from internal resources that are not publicly available
only by manipulating the processed input stream.
CVE-2020-26259
Xstream is vulnerable to an Arbitrary File Deletion on the local host when
unmarshalling. The vulnerability may allow a remote attacker to delete
arbitrary known files on the host as long as the executing process has
sufficient rights only by manipulating the processed input stream.
For Debian 9 stretch, these problems have been fixed in version
1.4.11.1-1+deb9u1.
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 LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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