CVE-2021-21316

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Summary

CVECVE-2021-21316
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-02-16 18:15:00 UTC
Updated2021-02-26 14:35:00 UTC
Descriptionless-openui5 is an npm package which enables building OpenUI5 themes with Less.js. In less-openui5 before version 0.10., when processing theming resources (i.e. `*.less` files) with less-openui5 that originate from an untrusted source, those resources might contain JavaScript code which will be executed in the context of the build process. While this is a feature of the Less.js library it is an unexpected behavior in the context of OpenUI5 and SAPUI5 development. Especially in the context of UI5 Tooling which relies on less-openui5. An attacker might create a library or theme-library containing a custom control or theme, hiding malicious JavaScript code in one of the .less files. Refer to the referenced GHSA-3crj-w4f5-gwh4 for examples. Starting with Less.js version 3.0.0, the Inline JavaScript feature is disabled by default. less-openui5 however currently uses a fork of Less.js v1.6.3. Note that disabling the Inline JavaScript feature in Less.js versions 1.x, still evaluates code has additional double codes around it. We decided to remove the inline JavaScript evaluation feature completely from the code of our Less.js fork. This fix is available in less-openui5 version 0.10.0.

Risk And Classification

Problem Types: CWE-74

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Less-openui5 Project Less-openui5 All All All All
Application Less-openui5 Project Less-openui5 All All All All

References

ReferenceSourceLinkTags
Processing untrusted theming resources might execute arbitrary code (ACE) · Advisory · SAP/less-openui5 · GitHub CONFIRM github.com Third Party Advisory
less-openui5 MISC www.npmjs.com Product, Third Party Advisory
Usage | Less.js MISC lesscss.org Third Party Advisory
[BREAKING] Security: Disable JavaScript execution in Less.js · SAP/less-openui5@c0d3a85 · GitHub MISC github.com Patch, Third Party Advisory
Release v0.10.0 · SAP/less-openui5 · GitHub MISC github.com Release Notes, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 982948 Nodejs (npm) Security Update for less-openui5 (GHSA-3crj-w4f5-gwh4)

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