All the vulnerabilities related to the version 3.4.6 of the package
Denial of Service in js-yaml
Versions of js-yaml
prior to 3.13.0 are vulnerable to Denial of Service. By parsing a carefully-crafted YAML file, the node process stalls and may exhaust system resources leading to a Denial of Service.
Upgrade to version 3.13.0.
Code Injection in js-yaml
Versions of js-yaml
prior to 3.13.1 are vulnerable to Code Injection. The load()
function may execute arbitrary code injected through a malicious YAML file. Objects that have toString
as key, JavaScript code as value and are used as explicit mapping keys allow attackers to execute the supplied code through the load()
function. The safeLoad()
function is unaffected.
An example payload is
{ toString: !<tag:yaml.org,2002:js/function> 'function (){return Date.now()}' } : 1
which returns the object
{
"1553107949161": 1
}
Upgrade to version 3.13.1.