Remote Code Execution (RCE) Affecting com.h2database:h2 package, versions [0,]


0.0
high
  • Exploit Maturity

    Mature

  • Attack Complexity

    High

  • Confidentiality

    High

  • Integrity

    High

  • Availability

    High

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  • snyk-id

    SNYK-JAVA-COMH2DATABASE-31685

  • published

    6 Jun 2018

  • disclosed

    11 Apr 2018

  • credit

    Caio Vargas, Matheus Bernardes, Nubank

How to fix?

There is no fixed version for com.h2database:h2.

Overview

com.h2database:h2 is a database engine

Affected versions of this package are vulnerable to Remote Code Execution (RCE). It provides a web console for managing the database, and by default it does not have a password set. The CREATE ALIAS function calls Java code, allowing an attacker to execute arbitrary Java code on projects running the h2 database.

NOTE: To be remotely exploitable, the affected application must be configured with the non-default setting webAllowOthers=true, either in a config file or as a parameter passed in when the servlet is invoked. The vulnerability can be avoided by setting a password on the database and/or restricting access to localhost using the above setting.

PoC

CREATE ALIAS REVERSE AS $$ String reverse(String s) { return new StringBuilder(s).reverse().toString(); } $$;
CALL REVERSE('Test');