CVE-2021-32819
HIGH EXPLOITED IN THE WILD NUCLEIsquirrelly < 9.0.0 - Remote Code Execution via Express Render API
Title source: llmExploitation Summary
CVE-2021-32819 has been observed exploited in the wild (reported by VulnCheck KEV, InTheWild.io). EIP tracks 1 public exploit from researchers including Abady0x1. A Nuclei detection template is also available.
AI-analyzed exploit summary The exploit leverages SquirrellyJS template engine misconfiguration to inject malicious code via the 'defaultFilter' parameter, leading to remote code execution. It sends a crafted HTTP request with a reverse shell payload to the target application.
Description
Squirrelly is a template engine implemented in JavaScript that works out of the box with ExpressJS. Squirrelly mixes pure template data with engine configuration options through the Express render API. By overwriting internal configuration options remote code execution may be triggered in downstream applications. This issue is fixed in version 9.0.0. For complete details refer to the referenced GHSL-2021-023.
Exploits (1)
The exploit leverages SquirrellyJS template engine misconfiguration to inject malicious code via the 'defaultFilter' parameter, leading to remote code execution. It sends a crafted HTTP request with a reverse shell payload to the target application.
Nuclei Templates (1)
References (4)
Scores
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N