Swig is a versatile and extensible templating engine, drawing inspiration from Django, Jinja2, and Twig, designed for both Node.js and browser environments. Versions 1.3.0 and 1.3.2 share a foundation, offering developers a robust solution for dynamic content generation. Both versions rely on uglify-js for JavaScript minification and optimist for command-line argument parsing. Their development environments are also identical, utilizing tools such as lodash for utility functions, express for web application framework needs during testing, nodelint for code quality, mocha for testing with expect.js for assertions, still and less for styling concerns, mocha-phantomjs for headless browser testing, blanket and travis-cov for code coverage, phantomjs as a headless browser, browserify for bundling and file for file system operations and jsdoc for documentation generation.
The key distinction lies in their release dates: version 1.3.0 was released on January 20, 2014, while version 1.3.2 followed shortly after on January 28, 2014. This suggests that version 1.3.2 likely contains bug fixes or minor enhancements implemented after the initial 1.3.0 release.
For developers, Swig provides a familiar syntax and a powerful engine for building dynamic web applications. Its extendability allows for custom filters, tags, and extensions to tailor the engine to specific project needs. Considering the minimal timeframe between releases, developers should strongly consider using the newer 1.3.2 to benefit from any potential improvements or fixes. The library's MIT license promotes open usage and modification, furthering its appeal for a wide rang of use cases.
All the vulnerabilities related to the version 1.3.2 of the package
Arbitrary local file read vulnerability during template rendering
Directory traversal vulnerability in swig-templates thru 2.0.4 and swig thru 1.4.2, allows attackers to read arbitrary files via the include or extends tags.
Regular Expression Denial of Service in uglify-js
Versions of uglify-js prior to 2.6.0 are affected by a regular expression denial of service vulnerability when malicious inputs are passed into the parse() method.
var u = require('uglify-js');
var genstr = function (len, chr) {
var result = "";
for (i=0; i<=len; i++) {
result = result + chr;
}
return result;
}
u.parse("var a = " + genstr(process.argv[2], "1") + ".1ee7;");
$ time node test.js 10000
real 0m1.091s
user 0m1.047s
sys 0m0.039s
$ time node test.js 80000
real 0m6.486s
user 0m6.229s
sys 0m0.094s
Update to version 2.6.0 or later.
Prototype Pollution in minimist
Affected versions of minimist are vulnerable to prototype pollution. Arguments are not properly sanitized, allowing an attacker to modify the prototype of Object, causing the addition or modification of an existing property that will exist on all objects.
Parsing the argument --__proto__.y=Polluted adds a y property with value Polluted to all objects. The argument --__proto__=Polluted raises and uncaught error and crashes the application.
This is exploitable if attackers have control over the arguments being passed to minimist.
Upgrade to versions 0.2.1, 1.2.3 or later.
Prototype Pollution in minimist
Minimist prior to 1.2.6 and 0.2.4 is vulnerable to Prototype Pollution via file index.js, function setKey() (lines 69-95).