CVE-2019-20920
Handlebars Arbitrary Code Execution Vulnerability
Description
Handlebars before 3.0.8 and 4.x before 4.5.3 is vulnerable to Arbitrary Code Execution. The lookup helper fails to properly validate templates, allowing attackers to submit templates that execute arbitrary JavaScript. This can be used to run arbitrary code on a server processing Handlebars templates or in a victim's browser (effectively serving as XSS).
INFO
Published Date :
Sept. 30, 2020, 6:15 p.m.
Last Modified :
Oct. 15, 2020, 5:35 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.3
Exploitability Score :
2.2
Public PoC/Exploit Available at Github
CVE-2019-20920 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2019-20920.
| URL | Resource |
|---|---|
| https://snyk.io/vuln/SNYK-JS-HANDLEBARS-534478 | Third Party Advisory |
| https://www.npmjs.com/advisories/1316 | Exploit Third Party Advisory |
| https://www.npmjs.com/advisories/1324 | 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).
A centralized repository of standalone security patches for open source libraries.
appsec backport cve devsecops fix hotfix open-source patch protection remediation seal security update upgrade vulnerability
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-20920 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-20920 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 [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Oct. 15, 2020
Action Type Old Value New Value Removed CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P) Removed CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:L -
Initial Analysis by [email protected]
Oct. 09, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://snyk.io/vuln/SNYK-JS-HANDLEBARS-534478 No Types Assigned https://snyk.io/vuln/SNYK-JS-HANDLEBARS-534478 Third Party Advisory Changed Reference Type https://www.npmjs.com/advisories/1316 No Types Assigned https://www.npmjs.com/advisories/1316 Exploit, Third Party Advisory Changed Reference Type https://www.npmjs.com/advisories/1324 No Types Assigned https://www.npmjs.com/advisories/1324 Third Party Advisory Added CWE NIST CWE-94 Added CPE Configuration OR *cpe:2.3:a:handlebarsjs:handlebars:*:*:*:*:*:node.js:*:* versions up to (excluding) 3.0.8 *cpe:2.3:a:handlebarsjs:handlebars:*:*:*:*:*:node.js:*:* versions from (including) 4.0.0 up to (excluding) 4.5.3
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-20920 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-2019-20920
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.70 }} 0.12%
score
0.78239
percentile