{"schemaVersion":3,"id":"CVE-2015-1796","aliases":["GHSA-78fq-w796-q537"],"status":"published","duplicateOf":null,"title":null,"description":"The PKIX trust engines in Shibboleth Identity Provider before 2.4.4 and OpenSAML Java (OpenSAML-J) before 2.6.5 trust candidate X.509 credentials when no trusted names are available for the entityID, which allows remote attackers to impersonate an entity via a certificate issued by a shibmd:KeyAuthority trust anchor.","dates":{"published":"2015-07-08T15:00:00.000Z","modified":"2024-08-06T04:54:16.257Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":4.3,"severity":"medium","version":"2.0","versionLabel":"v2.0","source":"NVD","vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":4.3,"severity":"medium","vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01247,"percentile":0.68935,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":-0.00899999999999998,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.01256},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01247,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01247,"percentile":0.68935}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01256,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01247,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01247,"percentile":0.68935}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-254","name":"7PK - Security Features","description":"Software security is not security software. Here we're concerned with topics like authentication, access control, confidentiality, cryptography, and privilege management.","type":"category","status":"Incomplete","abstraction":null,"likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/254.html"}],"affected":[{"vendor":"edu.internet2.middleware","product":"shibboleth-identityprovider","name":"edu.internet2.middleware:shibboleth-identityprovider","label":"shibboleth-identityprovider","ecosystem":"Maven","cpePart":null,"purl":"pkg:maven/edu.internet2.middleware/shibboleth-identityprovider","purlType":"maven","versions":[{"text":"< 2.4.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.4.4","eol":null,"hubHref":null},{"vendor":"org.opensaml","product":"opensaml","name":"org.opensaml:opensaml","label":"opensaml","ecosystem":"Maven","cpePart":null,"purl":"pkg:maven/org.opensaml/opensaml","purlType":"maven","versions":[{"text":"< 2.6.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.6.5","eol":null,"hubHref":null},{"vendor":"shibboleth","product":"identity_provider","name":"identity provider","label":"identity_provider","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 2.4.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 2.4.3","eol":null,"hubHref":"/vendor/shibboleth/identity_provider"},{"vendor":"shibboleth","product":"opensaml_java","name":"opensaml java","label":"opensaml_java","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 2.6.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 2.6.4","eol":null,"hubHref":"/vendor/shibboleth/opensaml_java"}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"http://rhn.redhat.com/errata/RHSA-2015-1176.html","label":"rhn.redhat.com/errata/RHSA-2015-1176.html","hostname":"rhn.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT","WEB"]},{"url":"https://shibboleth.net/community/advisories/secadv_20150225.txt","label":"shibboleth.net/community/advisories/secadv_20150225.txt","hostname":"shibboleth.net","tags":["X Refsource CONFIRM","Vendor Advisory","WEB"]},{"url":"http://rhn.redhat.com/errata/RHSA-2015-1177.html","label":"rhn.redhat.com/errata/RHSA-2015-1177.html","hostname":"rhn.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT","WEB"]},{"url":"http://www.securityfocus.com/bid/75370","label":"www.securityfocus.com/bid/75370","hostname":"www.securityfocus.com","tags":["VDB Entry","X Refsource BID"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-1796","label":"nvd.nist.gov/vuln/detail/CVE-2015-1796","hostname":"nvd.nist.gov","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2015-07-08T15:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-06T04:54:16.257Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":17,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T23:00:47.743Z","stale":false,"partial":false}}