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Advisories

Camunda Expression Injection via orQueries RCE

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Severity
critical
Date
Affecting

  • Camunda 7 >= 7.24.0, < 7.24.14

  • Camunda 7 >= 7.23.0, < 7.23.17

CWE
  • CWE-917 Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CVSS
9.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
CodeAnt AI Security Research Team
Description
Camunda 7.24.0 before 7.24.14 and 7.23.0 before 7.23.17 contains an expression injection vulnerability where AdhocQueryValidator.validate() fails to check sub-query expression maps within the orQueries field exposed by TaskQueryDto, allowing authenticated users to bypass the enableExpressionsInAdhocQueries restriction. Attackers can supply a malicious JUEL expression such as dueAfterExpression inside an orQueries entry to achieve arbitrary Java reflection and invoke java.lang.Runtime.exec, resulting in operating-system command execution as the engine service user.

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