CVE-2021-28170

jakarta-el: ELParserTokenManager enables invalid EL expressions to be evaluate

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In the Jakarta Expression Language implementation 3.0.3 and earlier, a bug in the ELParserTokenManager enables invalid EL expressions to be evaluated as if they were valid.

En la implementación de Jakarta Expression Language versiones 3.0.3 y anteriores, un bug en la función ELParserTokenManager permite que las expresiones EL no válidas sean evaluadas como si fueran válidas

Red Hat JBoss Enterprise Application Platform 7 is a platform for Java applications based on the WildFly application runtime. This release of Red Hat JBoss Enterprise Application Platform 7.4.1 serves as a replacement for Red Hat JBoss Enterprise Application Platform 7.4.0 and includes bug fixes and enhancements. See the Red Hat JBoss Enterprise Application Platform 7.4.1 Release Notes for information about the most significant bug fixes and enhancements included in this release. Issues addressed include code execution, cross site scripting, denial of service, and traversal vulnerabilities.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-03-12 CVE Reserved
2021-05-26 CVE Published
2024-08-03 CVE Updated
2024-08-03 First Exploit
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-20: Improper Input Validation
CWE-917: Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')

CAPEC

References (5)

URL	Tag	Source

URL	Date	SRC
https://github.com/eclipse-ee4j/el-ri/issues/155	2024-08-03
https://securitylab.github.com/advisories/GHSL-2020-021-jakarta-el	2024-08-03

URL	Date	SRC
https://www.oracle.com/security-alerts/cpuapr2022.html	2022-04-25

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2021-28170	2022-03-23
https://bugzilla.redhat.com/show_bug.cgi?id=1965497	2022-03-23

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Eclipse Search vendor "Eclipse"		Jakarta Expression Language Search vendor "Eclipse" for product "Jakarta Expression Language"				<= 3.0.3 Search vendor "Eclipse" for product "Jakarta Expression Language" and version " <= 3.0.3"		-		Affected
Quarkus Search vendor "Quarkus"		Quarkus Search vendor "Quarkus" for product "Quarkus"				< 2.3.0 Search vendor "Quarkus" for product "Quarkus" and version " < 2.3.0"		-		Affected
Oracle Search vendor "Oracle"		Communications Cloud Native Core Policy Search vendor "Oracle" for product "Communications Cloud Native Core Policy"				1.14.0 Search vendor "Oracle" for product "Communications Cloud Native Core Policy" and version "1.14.0"		-		Affected
Oracle Search vendor "Oracle"		Weblogic Server Search vendor "Oracle" for product "Weblogic Server"				14.1.1.0.0 Search vendor "Oracle" for product "Weblogic Server" and version "14.1.1.0.0"		-		Affected