| Package | Affected versions | Patched versions |
|---|---|---|
| angular-expressions | < 1.5.2 | 1.5.2 |
| angular-expressions | < 1.5.2 | 1.5.2 |
An attacker can write a malicious expression that escapes the sandbox to execute arbitrary code on the system.
Example of vulnerable code:
const expressions = require("angular-expressions");
const result = expressions.compile("a | __proto__")({}, {});
This should throw the error : Filter 'proto' is not defined, however, this shows :
Uncaught SyntaxError: Unexpected identifier 'Object'
With a more complex (undisclosed) payload, one can get full access to Arbitrary code execution on the system.
angular-expressions <= 1.5.1
The problem has been patched in version 1.5.2 of angular-expressions.
Credits go to San Gil from www.securityoffice.io who has found the issue and reported it to us.
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