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Improper Control of Generation of Code ('Code Injection') in ejs

CVE-2022-29078

  • ejs
  • org.webjars.npm:ejs
High
9.8/10

Summary

The package ejs (aka Embedded JavaScript template) allows Server Side Template Injection in "settings[view options][outputFunctionName]". This is parsed as an internal option and overwrites the outputFunctionName option with an Arbitrary OS command, which is executed upon template compilation. This issue affects versions prior to 3.1.7.

  • LOW
  • NETWORK
  • HIGH
  • UNCHANGED
  • NONE
  • NONE
  • HIGH
  • HIGH

CWE-94 - Code Injection

Code injection is a type of vulnerability that allows an attacker to execute arbitrary code. This vulnerability fully compromises the machine and can cause a wide variety of security issues, such as unauthorized access to sensitive information, manipulation of data, denial of service attacks etc. Code injection is different from command injection in the fact that it is limited by the functionality of the injected language (e.g. PHP), as opposed to command injection, which leverages existing code to execute commands, usually within the context of a shell.

References

Advisory Timeline

  • Published