One popular Denial of Service vulnerability is DDoS a Distributed Denial of Service , an attack that attempts to clog network pipes to the system by generating a large volume of traffic from many machines. When it comes to open source libraries, DoS vulnerabilities allow attackers to trigger such a crash or crippling of the service by using a flaw either in the application code or from the use of open source libraries. For example, commons-fileupload:commons-fileupload.
Crash - An attacker sending crafted requests that could cause the system to crash. For Example, npm ws package. An attacker who can send a malicious excel file parsed by this library can cause maximum CPU usage. The function defaultsDeep could be tricked into adding or modifying properties of Object. For more information, check out our blog post. Affected versions of this package are vulnerable to Prototype Pollution via the setWith and set functions.
The functions merge , mergeWith , and defaultsDeep could be tricked into adding or modifying properties of Object. This is due to an incomplete fix to CVE A cross-site scripting attack occurs when the attacker tricks a legitimate web-based application or site to accept a request as originating from a trusted source.
This is done by escaping the context of the web application; the web application then delivers that data to its users along with other trusted dynamic content, without validating it.
Injecting malicious code is the most prevalent manner by which XSS is exploited; for this reason, escaping characters in order to prevent this manipulation is the top method for securing code against this vulnerability. Escaping means that the application is coded to mark key characters, and particularly key characters included in user input, to prevent those characters from being interpreted in a dangerous context. The most prominent use of XSS is to steal cookies source: OWASP HttpOnly and hijack user sessions, but XSS exploits have been used to expose sensitive information, enable access to privileged services and functionality and deliver malware.
The function zipObjectDeep can be tricked into adding or modifying properties of the Object prototype. These properties will be present on all objects. The utilities function allow modification of the Object prototype. If an attacker can control part of the structure passed to this function, they could add or modify an existing property. Crafting a new zip file with filenames set to Object prototype values e. It parses dates using regex strings, which may cause a slowdown of 2 seconds per 50k characters.
This can cause an impact of about 2 seconds matching time for data 50k characters long. This can cause an impact of about 10 seconds matching time for data 40k characters long. Vulnerabilities 19 via 19 paths Dependencies 49 Source npm. Find a vulnerability free version of react-file-viewer View react-file-viewer package health on Snyk Advisor. Find, fix and prevent vulnerabilities in your code.
Test and protect my applications. Issues Dependencies. Severity Critical. Prototype Pollution. Vulnerable module: lodash Introduced through: mammoth 1. Details Prototype Pollution is a vulnerability affecting JavaScript. Property definition by path There are a few JavaScript libraries that use an API to define property values on an object based on a given path.
DoS occurs when Object holds generic functions that are implicitly called for various operations for example, toString and valueOf. The attacker pollutes Object. In this case, the code fails and is likely to cause a denial of service. For example: if an attacker pollutes Object. Remote Code Execution Client Remote code execution is generally only possible in cases where the codebase evaluates a specific attribute of an object, and then executes that evaluation.
For example: eval someobject. In this case, if the attacker pollutes Object. Property Injection Client The attacker pollutes properties that the codebase relies on for their informative value, including security properties such as cookies or tokens. For example: if a codebase checks privileges for someuser. Affected environments The following environments are susceptible to a Prototype Pollution attack: Application server Web server How to prevent Freeze the prototype— use Object. Require schema validation of JSON input.
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Thank you! Say, for example, you want to add support for. First, you need to create a "driver" for that file type. A driver is just a component that is capable of rendering that file type. Last updated 2 years ago by michaelwolo. There is one main React component, FileViewer , that takes the following props: fileType string: type of resource to be shown one of the supported file formats, eg 'png'.
To start demo app make start will start the demo app served by webpack-dev-server Testing Tests use Jest and Enzyme. Run tests with: make test This starts Jest in watch mode.
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