The extlib gem 0.9.15 and earlier for Ruby does not properly restrict casts of string values, which might allow remote attackers to conduct object-injection attacks and execute arbitrary code, or cause a denial of service (memory and CPU consumption) by leveraging Action Pack support for (1) YAML type conversion or (2) Symbol type conversion, a similar vulnerability to CVE-2013-0156.
{ "nvd_published_at": null, "cwe_ids": [ "CWE-704" ], "severity": "HIGH", "github_reviewed": true, "github_reviewed_at": "2020-06-16T21:28:42Z" }