CVE-2021-21348

XStream is vulnerable to an attack using Regular Expression for a Denial of Service (ReDos)

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16, there is a vulnerability which may allow a remote attacker to occupy a thread that consumes maximum CPU time and will never return. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.16.

XStream es una biblioteca de Java para serializar objetos a XML y viceversa. En XStream anterior a la versión 1.4.16, se presenta una vulnerabilidad que puede permitir que un atacante remoto ocupe un hilo que consume el máximo tiempo de CPU y nunca regresará. Ningún usuario está afectado, si siguió la recomendación de configurar el framework de seguridad de XStream con una lista blanca limitada a los tipos mínimos requeridos. Si confía en la lista negra predeterminada de XStream del Framework de Seguridad, tendrá que usar al menos la versión 1.4.16

Red Hat Decision Manager is an open source decision management platform that combines business rules management, complex event processing, Decision Model & Notation execution, and Business Optimizer for solving planning problems. It automates business decisions and makes that logic available to the entire business. This release of Red Hat Decision Manager 7.11.0 serves as an update to Red Hat Decision Manager 7.10.1, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. Issues addressed include XML injection, code execution, denial of service, and server-side request forgery vulnerabilities.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-12-22 CVE Reserved
2021-03-22 CVE Published
2024-08-03 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-400: Uncontrolled Resource Consumption
CWE-502: Deserialization of Untrusted Data

CAPEC

References (17)

URL	Tag	Source
http://x-stream.github.io/changes.html#1.4.16	Release Notes
https://github.com/x-stream/xstream/security/advisories/GHSA-56p8-3fh9-4cvq	Third Party Advisory
https://lists.apache.org/thread.html/r8244fd0831db894d5e89911ded9c72196d395a90ae655414d23ed0dd%40%3Cusers.activemq.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/r9ac71b047767205aa22e3a08cb33f3e0586de6b2fac48b425c6e16b0%40%3Cdev.jmeter.apache.org%3E	Mailing List
https://lists.debian.org/debian-lts-announce/2021/04/msg00002.html	Mailing List
https://security.netapp.com/advisory/ntap-20210430-0002	Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.html	Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html	Third Party Advisory
https://x-stream.github.io/CVE-2021-21348.html	Third Party Advisory
https://x-stream.github.io/security.html#workaround	Mitigation

URL	Date	SRC

URL	Date	SRC
https://www.oracle.com/security-alerts/cpujan2022.html	2023-11-07

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB	2023-11-07
https://www.debian.org/security/2021/dsa-5004	2023-11-07
https://access.redhat.com/security/cve/CVE-2021-21348	2021-12-14
https://bugzilla.redhat.com/show_bug.cgi?id=1942633	2021-12-14

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Xstream Project Search vendor "Xstream Project"		Xstream Search vendor "Xstream Project" for product "Xstream"				< 1.4.16 Search vendor "Xstream Project" for product "Xstream" and version " < 1.4.16"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				33 Search vendor "Fedoraproject" for product "Fedora" and version "33"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				34 Search vendor "Fedoraproject" for product "Fedora" and version "34"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				35 Search vendor "Fedoraproject" for product "Fedora" and version "35"		-		Affected
Oracle Search vendor "Oracle"		Banking Enterprise Default Management Search vendor "Oracle" for product "Banking Enterprise Default Management"				2.10.0 Search vendor "Oracle" for product "Banking Enterprise Default Management" and version "2.10.0"		-		Affected
Oracle Search vendor "Oracle"		Banking Enterprise Default Management Search vendor "Oracle" for product "Banking Enterprise Default Management"				2.12.0 Search vendor "Oracle" for product "Banking Enterprise Default Management" and version "2.12.0"		-		Affected
Oracle Search vendor "Oracle"		Banking Platform Search vendor "Oracle" for product "Banking Platform"				2.4.0 Search vendor "Oracle" for product "Banking Platform" and version "2.4.0"		-		Affected
Oracle Search vendor "Oracle"		Banking Platform Search vendor "Oracle" for product "Banking Platform"				2.7.1 Search vendor "Oracle" for product "Banking Platform" and version "2.7.1"		-		Affected
Oracle Search vendor "Oracle"		Banking Platform Search vendor "Oracle" for product "Banking Platform"				2.9.0 Search vendor "Oracle" for product "Banking Platform" and version "2.9.0"		-		Affected
Oracle Search vendor "Oracle"		Banking Platform Search vendor "Oracle" for product "Banking Platform"				2.12.0 Search vendor "Oracle" for product "Banking Platform" and version "2.12.0"		-		Affected
Oracle Search vendor "Oracle"		Banking Virtual Account Management Search vendor "Oracle" for product "Banking Virtual Account Management"				14.2.0 Search vendor "Oracle" for product "Banking Virtual Account Management" and version "14.2.0"		-		Affected
Oracle Search vendor "Oracle"		Banking Virtual Account Management Search vendor "Oracle" for product "Banking Virtual Account Management"				14.3.0 Search vendor "Oracle" for product "Banking Virtual Account Management" and version "14.3.0"		-		Affected
Oracle Search vendor "Oracle"		Banking Virtual Account Management Search vendor "Oracle" for product "Banking Virtual Account Management"				14.5.0 Search vendor "Oracle" for product "Banking Virtual Account Management" and version "14.5.0"		-		Affected
Oracle Search vendor "Oracle"		Business Activity Monitoring Search vendor "Oracle" for product "Business Activity Monitoring"				11.1.1.9.0 Search vendor "Oracle" for product "Business Activity Monitoring" and version "11.1.1.9.0"		-		Affected
Oracle Search vendor "Oracle"		Business Activity Monitoring Search vendor "Oracle" for product "Business Activity Monitoring"				12.2.1.3.0 Search vendor "Oracle" for product "Business Activity Monitoring" and version "12.2.1.3.0"		-		Affected
Oracle Search vendor "Oracle"		Business Activity Monitoring Search vendor "Oracle" for product "Business Activity Monitoring"				12.2.1.4.0 Search vendor "Oracle" for product "Business Activity Monitoring" and version "12.2.1.4.0"		-		Affected
Oracle Search vendor "Oracle"		Communications Billing And Revenue Management Elastic Charging Engine Search vendor "Oracle" for product "Communications Billing And Revenue Management Elastic Charging Engine"				12.0.0.3.0 Search vendor "Oracle" for product "Communications Billing And Revenue Management Elastic Charging Engine" and version "12.0.0.3.0"		-		Affected
Oracle Search vendor "Oracle"		Communications Policy Management Search vendor "Oracle" for product "Communications Policy Management"				12.5.0 Search vendor "Oracle" for product "Communications Policy Management" and version "12.5.0"		-		Affected
Oracle Search vendor "Oracle"		Communications Unified Inventory Management Search vendor "Oracle" for product "Communications Unified Inventory Management"				7.3.2 Search vendor "Oracle" for product "Communications Unified Inventory Management" and version "7.3.2"		-		Affected
Oracle Search vendor "Oracle"		Communications Unified Inventory Management Search vendor "Oracle" for product "Communications Unified Inventory Management"				7.3.4 Search vendor "Oracle" for product "Communications Unified Inventory Management" and version "7.3.4"		-		Affected
Oracle Search vendor "Oracle"		Communications Unified Inventory Management Search vendor "Oracle" for product "Communications Unified Inventory Management"				7.3.5 Search vendor "Oracle" for product "Communications Unified Inventory Management" and version "7.3.5"		-		Affected
Oracle Search vendor "Oracle"		Communications Unified Inventory Management Search vendor "Oracle" for product "Communications Unified Inventory Management"				7.4.0 Search vendor "Oracle" for product "Communications Unified Inventory Management" and version "7.4.0"		-		Affected
Oracle Search vendor "Oracle"		Communications Unified Inventory Management Search vendor "Oracle" for product "Communications Unified Inventory Management"				7.4.1 Search vendor "Oracle" for product "Communications Unified Inventory Management" and version "7.4.1"		-		Affected
Oracle Search vendor "Oracle"		Mysql Server Search vendor "Oracle" for product "Mysql Server"				<= 8.0.27 Search vendor "Oracle" for product "Mysql Server" and version " <= 8.0.27"		-		Affected
Oracle Search vendor "Oracle"		Retail Xstore Point Of Service Search vendor "Oracle" for product "Retail Xstore Point Of Service"				16.0.6 Search vendor "Oracle" for product "Retail Xstore Point Of Service" and version "16.0.6"		-		Affected
Oracle Search vendor "Oracle"		Retail Xstore Point Of Service Search vendor "Oracle" for product "Retail Xstore Point Of Service"				17.0.4 Search vendor "Oracle" for product "Retail Xstore Point Of Service" and version "17.0.4"		-		Affected
Oracle Search vendor "Oracle"		Retail Xstore Point Of Service Search vendor "Oracle" for product "Retail Xstore Point Of Service"				18.0.3 Search vendor "Oracle" for product "Retail Xstore Point Of Service" and version "18.0.3"		-		Affected
Oracle Search vendor "Oracle"		Retail Xstore Point Of Service Search vendor "Oracle" for product "Retail Xstore Point Of Service"				19.0.2 Search vendor "Oracle" for product "Retail Xstore Point Of Service" and version "19.0.2"		-		Affected
Oracle Search vendor "Oracle"		Webcenter Portal Search vendor "Oracle" for product "Webcenter Portal"				11.1.1.9.0 Search vendor "Oracle" for product "Webcenter Portal" and version "11.1.1.9.0"		-		Affected
Oracle Search vendor "Oracle"		Webcenter Portal Search vendor "Oracle" for product "Webcenter Portal"				12.2.1.3.0 Search vendor "Oracle" for product "Webcenter Portal" and version "12.2.1.3.0"		-		Affected
Oracle Search vendor "Oracle"		Webcenter Portal Search vendor "Oracle" for product "Webcenter Portal"				12.2.1.4.0 Search vendor "Oracle" for product "Webcenter Portal" and version "12.2.1.4.0"		-		Affected