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CVE-2021-28170

Quick assessment

Affected
The Eclipse Foundation Jakarta Expression Language Implementation
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Jakarta Expression Language是Jakarta项目的一种语言。提供了一种重要的机制，使表示层（网页）能够与应用程序逻辑（托管Bean）进行通信。 Jakarta Expression Language implementation 3.0.3版本及之前存在安全漏洞，该漏洞源于程序中的一个bug使无效的EL表达式能够被当作有效的表达式来计算。

AI Predicted 6.5 Difficulty: Easy EPSS 2.13% · P81

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-28170

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Jakarta Expression Language 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Jakarta Expression Language是Jakarta项目的一种语言。提供了一种重要的机制，使表示层（网页）能够与应用程序逻辑（托管Bean）进行通信。 Jakarta Expression Language implementation 3.0.3版本及之前存在安全漏洞，该漏洞源于程序中的一个bug使无效的EL表达式能够被当作有效的表达式来计算。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
The Eclipse Foundation Jakarta Expression Language Implementation unspecified ~ 3.0.3 -

II. Public POCs for CVE-2021-28170

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III. Intelligence Information for CVE-2021-28170

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Vendor Advisories for CVE-2021-28170 (1)

Other References for CVE-2021-28170 (2)

IV. Related Vulnerabilities

Same vendor: The Eclipse Foundation
Same weakness: CWE-20

V. Comments for CVE-2021-28170

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