Vulnerability Details : CVE-2021-28170
Potential exploit
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.
Vulnerability category: Input validation
Products affected by CVE-2021-28170
- cpe:2.3:a:oracle:weblogic_server:14.1.1.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.14.0:*:*:*:*:*:*:*
- cpe:2.3:a:eclipse:jakarta_expression_language:*:*:*:*:*:*:*:*
- cpe:2.3:a:quarkus:quarkus:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-28170
0.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 24 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-28170
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:P/A:N |
10.0
|
2.9
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
3.9
|
1.4
|
NIST |
CWE ids for CVE-2021-28170
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: emo@eclipse.org (Secondary)
-
The product constructs all or part of an expression language (EL) statement in a framework such as a Java Server Page (JSP) using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended EL statement before it is executed.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-28170
-
https://www.oracle.com/security-alerts/cpuapr2022.html
Oracle Critical Patch Update Advisory - April 2022Patch;Third Party Advisory
-
https://github.com/eclipse-ee4j/el-ri/issues/155
GHSL-2020-021 - Bypass input sanitization of EL expressions · Issue #155 · eclipse-ee4j/el-ri · GitHubExploit;Issue Tracking;Third Party Advisory
-
https://securitylab.github.com/advisories/GHSL-2020-021-jakarta-el/
GHSL-2020-021: Bypass input sanitization of EL expressions in Eclipse-EE4J | GitHub Security LabExploit;Third Party Advisory
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