{"cve":"CVE-2013-6391","nvd":{"published":"2013-12-14T17:21:46.663","modified":"2026-06-17T00:00:24.210","status":"Modified","description":"The ec2tokens API in OpenStack Identity (Keystone) before Havana 2013.2.1 and Icehouse before icehouse-2 does not return a trust-scoped token when one is received, which allows remote trust users to gain privileges by generating EC2 credentials from a trust-scoped token and using them in an ec2tokens API request.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-269"],"references":["http://rhn.redhat.com/errata/RHSA-2014-0089.html","http://secunia.com/advisories/56079","http://secunia.com/advisories/56154","http://www.openwall.com/lists/oss-security/2013/12/11/7","http://www.securityfocus.com/bid/64253"],"products":["canonical:ubuntu_linux","openstack:keystone","redhat:openstack"],"source":"nvd","synced_at":"2026-10-19T20:30:15.895642412+00:00"},"epss":{"cve":"CVE-2013-6391","score":0.02239,"percentile":0.82828,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}