CGA-2j9c-m2q8-qqc4

Summary

Remote code execution via the pretty option.

Description

Impact

If a remote attacker was able to control the pretty option of the pug compiler, e.g. if you spread a user provided object such as the query parameters of a request into the pug template inputs, it was possible for them to achieve remote code execution on the node.js backend.

Patches

Upgrade to pug@3.0.1 or pug-code-gen@3.0.2 or pug-code-gen@2.0.3, which correctly sanitise the parameter.

Workarounds

If there is no way for un-trusted input to be passed to pug as the pretty option, e.g. if you compile templates in advance before applying user input to them, you do not need to upgrade.

References

Original report: https://github.com/pugjs/pug/issues/3312

For more information

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