Amazon Linux 2 : xstream (ALAS-2021-1729)

high Nessus Plugin ID 155989

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of xstream installed on the remote host is prior to 1.3.1-16. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2021-1729 advisory.

A flaw was found in xstream, a simple library used to serialize objects to XML and back again. This flaw allows a remote attacker to load and execute arbitrary code from a remote host by manipulating the processed input stream. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-39139)

XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose. (CVE-2021-39140)

A flaw was found in xstream, a simple library used to serialize objects to XML and back again. This flaw allows a remote attacker to load and execute arbitrary code from a remote host by manipulating the processed input stream. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-39141) (CVE-2021-39144) (CVE-2021-39145) (CVE-2021-39146) (CVE-2021-39147) (CVE-2021-39148) (CVE-2021-39149) (CVE-2021-39151) (CVE-2021-39153) (CVE-2021-39154)

A flaw was found in xstream, a simple library used to serialize objects to XML and back again. This flaw allows a remote attacker to request data from internal resources that are not publicly available by manipulating the processed input stream with Java runtime versions 14 to 8. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-39150) (CVE-2021-39152)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Run 'yum update xstream' to update your system.

Plugin Details

Severity: High

ID: 155989

File Name: al2_ALAS-2021-1729.nasl

Version: 1.7

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 12/10/2021

Updated: 12/11/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.9

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.4

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS Score Source: CVE-2021-39139

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 8.2

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:xstream, p-cpe:/a:amazon:linux:xstream-javadoc, cpe:/o:amazon:linux:2

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/8/2021

Vulnerability Publication Date: 8/23/2021

CISA Known Exploited Vulnerability Due Dates: 3/31/2023

Exploitable With

Core Impact

Metasploit (VMware NSX Manager XStream unauthenticated RCE)

Reference Information

CVE: CVE-2021-39139, CVE-2021-39140, CVE-2021-39141, CVE-2021-39144, CVE-2021-39145, CVE-2021-39146, CVE-2021-39147, CVE-2021-39148, CVE-2021-39149, CVE-2021-39150, CVE-2021-39151, CVE-2021-39152, CVE-2021-39153, CVE-2021-39154

ALAS: 2021-1729

Detections

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