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.
This PR contains the following updates:
2.0.4->3.0.1GitHub Vulnerability Alerts
CVE-2021-21353
Impact
If a remote attacker was able to control the
prettyoption 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@3.0.1orpug-code-gen@3.0.2orpug-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
prettyoption, 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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