CVE-2021-21316
SAP/UI5 Less-openui5 JavaScript Injection Vulnerability
Description
less-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.
INFO
Published Date :
Feb. 16, 2021, 6:15 p.m.
Last Modified :
Nov. 21, 2024, 5:48 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-21316
.
URL | Resource |
---|---|
http://lesscss.org/usage/#less-options-enable-inline-javascript-deprecated- | Third Party Advisory |
https://github.com/SAP/less-openui5/commit/c0d3a8572974a20ea6cee42da11c614a54f100e8 | Patch Third Party Advisory |
https://github.com/SAP/less-openui5/releases/tag/v0.10.0 | Release Notes Third Party Advisory |
https://github.com/SAP/less-openui5/security/advisories/GHSA-3crj-w4f5-gwh4 | Third Party Advisory |
https://www.npmjs.com/package/less-openui5 | Product Third Party Advisory |
http://lesscss.org/usage/#less-options-enable-inline-javascript-deprecated- | Third Party Advisory |
https://github.com/SAP/less-openui5/commit/c0d3a8572974a20ea6cee42da11c614a54f100e8 | Patch Third Party Advisory |
https://github.com/SAP/less-openui5/releases/tag/v0.10.0 | Release Notes Third Party Advisory |
https://github.com/SAP/less-openui5/security/advisories/GHSA-3crj-w4f5-gwh4 | Third Party Advisory |
https://www.npmjs.com/package/less-openui5 | Product Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-21316
vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-21316
vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://lesscss.org/usage/#less-options-enable-inline-javascript-deprecated- Added Reference https://github.com/SAP/less-openui5/commit/c0d3a8572974a20ea6cee42da11c614a54f100e8 Added Reference https://github.com/SAP/less-openui5/releases/tag/v0.10.0 Added Reference https://github.com/SAP/less-openui5/security/advisories/GHSA-3crj-w4f5-gwh4 Added Reference https://www.npmjs.com/package/less-openui5 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Feb. 26, 2021
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Changed Reference Type http://lesscss.org/usage/#less-options-enable-inline-javascript-deprecated- No Types Assigned http://lesscss.org/usage/#less-options-enable-inline-javascript-deprecated- Third Party Advisory Changed Reference Type https://github.com/SAP/less-openui5/commit/c0d3a8572974a20ea6cee42da11c614a54f100e8 No Types Assigned https://github.com/SAP/less-openui5/commit/c0d3a8572974a20ea6cee42da11c614a54f100e8 Patch, Third Party Advisory Changed Reference Type https://github.com/SAP/less-openui5/releases/tag/v0.10.0 No Types Assigned https://github.com/SAP/less-openui5/releases/tag/v0.10.0 Release Notes, Third Party Advisory Changed Reference Type https://github.com/SAP/less-openui5/security/advisories/GHSA-3crj-w4f5-gwh4 No Types Assigned https://github.com/SAP/less-openui5/security/advisories/GHSA-3crj-w4f5-gwh4 Third Party Advisory Changed Reference Type https://www.npmjs.com/package/less-openui5 No Types Assigned https://www.npmjs.com/package/less-openui5 Product, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:less-openui5_project:less-openui5:*:*:*:*:*:node.js:*:* versions up to (excluding) 0.10.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-21316
is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-21316
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.30 }} -0.06%
score
0.50360
percentile