QID 150797

QID 150797: Expression language Injection

Expression Language (EL) injection is a type of security vulnerability that occurs when an application allows user input to be directly included in dynamically generated expressions.

An attacker can read server-side data, such as the content of server-side variables, and some other inner configuration details. This is a quite dangerous vulnerability because developers assume their server-side code would not be read by anyone outside, so they may place sensitive information such as passwords, connection strings, database queries, etc. It can also be used for bypassing HttpOnly protection.

CVSS V3 rated as Critical - 9.8 severity.

CVSS V2 rated as Critical - 10 severity.

Solution

Apply input validation best practices to ensure there are no EL meta characters("${" and "#{") in the input.

Vendor References

CVEs related to QID 150797

Software Advisories

Advisory ID	Software	Component	Link

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