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AUSCERT External Security Bulletin Redistribution
ESB-2021.0210
xstream security update
19 January 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: xstream
Publisher: Red Hat
Operating System: Red Hat
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-26217
Reference: ESB-2021.0131
ESB-2020.4430
ESB-2020.4241
Original Bulletin:
https://access.redhat.com/errata/RHSA-2021:0162
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Red Hat Security Advisory
Synopsis: Important: xstream security update
Advisory ID: RHSA-2021:0162-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0162
Issue date: 2021-01-18
CVE Names: CVE-2020-26217
=====================================================================
1. Summary:
An update for xstream is now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Client Optional (v. 7) - noarch
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch
Red Hat Enterprise Linux Server Optional (v. 7) - noarch
Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch
3. Description:
XStream is a Java XML serialization library to serialize objects to and
deserialize object from XML.
Security Fix(es):
* XStream: remote code execution due to insecure XML deserialization when
relying on blocklists (CVE-2020-26217)
For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.
4. Solution:
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
5. Bugs fixed (https://bugzilla.redhat.com/):
1898907 - CVE-2020-26217 XStream: remote code execution due to insecure XML deserialization when relying on blocklists
6. Package List:
Red Hat Enterprise Linux Client Optional (v. 7):
Source:
xstream-1.3.1-12.el7_9.src.rpm
noarch:
xstream-1.3.1-12.el7_9.noarch.rpm
xstream-javadoc-1.3.1-12.el7_9.noarch.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
Source:
xstream-1.3.1-12.el7_9.src.rpm
noarch:
xstream-1.3.1-12.el7_9.noarch.rpm
xstream-javadoc-1.3.1-12.el7_9.noarch.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
Source:
xstream-1.3.1-12.el7_9.src.rpm
noarch:
xstream-1.3.1-12.el7_9.noarch.rpm
xstream-javadoc-1.3.1-12.el7_9.noarch.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
Source:
xstream-1.3.1-12.el7_9.src.rpm
noarch:
xstream-1.3.1-12.el7_9.noarch.rpm
xstream-javadoc-1.3.1-12.el7_9.noarch.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2020-26217
https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2021 Red Hat, Inc.
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NOTE: This is only the original release of the security bulletin. It may
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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
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===========================================================================
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