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Ubuntu Security Notice USN-6978-1
August 22, 2024

libxstream-java vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in XStream.

Software Description:
- libxstream-java: Java library to serialize objects to XML and back again

Details:

It was discovered that XStream incorrectly handled parsing of certain
crafted XML documents. A remote attacker could possibly use this issue to
read arbitrary files. (CVE-2016-3674)

Zhihong Tian and Hui Lu found that XStream was vulnerable to remote code
execution. A remote attacker could run arbitrary shell commands by
manipulating the processed input stream. (CVE-2020-26217)

It was discovered that XStream was vulnerable to server-side forgery
attacks. A remote attacker could request data from internal resources
that are not publicly available only by manipulating the processed input
stream. (CVE-2020-26258)

It was discovered that XStream was vulnerable to arbitrary file deletion
on the local host. A remote attacker could use this to delete arbitrary
known files on the host as long as the executing process had sufficient
rights only by manipulating the processed input stream. (CVE-2020-26259)

It was discovered that XStream was vulnerable to denial of service,
arbitrary code execution, arbitrary file deletion and server-side forgery
attacks. A remote attacker could cause any of those issues by
manipulating the processed input stream. (CVE-2021-21341, CVE-2021-21342,
CVE-2021-21343, CVE-2021-21344, CVE-2021-21345, CVE-2021-21346,
CVE-2021-21347, CVE-2021-21348, CVE-2021-21349, CVE-2021-21350,
CVE-2021-21351)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.04 LTS
   libxstream-java                 1.4.8-1ubuntu0.1+esm3
                                   Available with Ubuntu Pro

Ubuntu 14.04 LTS
   libxstream-java                 1.4.7-1ubuntu0.1+esm2
                                   Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
   https://ubuntu.com/security/notices/USN-6978-1
   CVE-2016-3674, CVE-2020-26217, CVE-2020-26258, CVE-2020-26259,
   CVE-2021-21341, CVE-2021-21342, CVE-2021-21343, CVE-2021-21344,
   CVE-2021-21345, CVE-2021-21346, CVE-2021-21347, CVE-2021-21348,
   CVE-2021-21349, CVE-2021-21350, CVE-2021-21351