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OpenAdvisories
High · 8.5 CVE-2021-21277 EUVD-2021-0555GHSA-j6px-jwvv-vpwq

Angular Expressions - Remote Code Execution

Published Feb 1, 2021 · Updated Aug 3, 2024 · Assigned by GitHub_M

Description

angular-expressions is "angular's nicest part extracted as a standalone module for the browser and node". In angular-expressions before version 1.1.2 there is a vulnerability which allows Remote Code Execution if you call "expressions.compile(userControlledInput)" where "userControlledInput" is text that comes from user input. The security of the package could be bypassed by using a more complex payload, using a ".constructor.constructor" technique. In terms of impact: If running angular-expressions in the browser, an attacker could run any browser script when the application code calls expressions.compile(userControlledInput). If running angular-expressions on the server, an attacker could run any Javascript expression, thus gaining Remote Code Execution. This is fixed in version 1.1.2 of angular-expressions A temporary workaround might be either to disable user-controlled input that will be fed into angular-expressions in your application or allow only following characters in the userControlledInput.

Affected products

VendorProductAffectedFixed
peerigon angular-expressions < 1.1.2 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm angular-expressions < 1.1.2 1.1.2 GHSA-j6px-jwvv-vpwq

References