{"cve":"CVE-2013-4143","nvd":{"published":"2014-05-30T14:55:08.257","modified":"2026-06-16T23:56:42.107","status":"Modified","description":"The (1) checkPasswd and (2) checkGroupXlockPasswds functions in xlockmore before 5.43 do not properly handle when a NULL value is returned upon an error by the crypt or dispcrypt function as implemented in glibc 2.17 and later, which allows attackers to bypass the screen lock via vectors related to invalid salts.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://openwall.com/lists/oss-security/2013/07/16/8","http://openwall.com/lists/oss-security/2013/07/18/6","http://www.tux.org/~bagleyd/xlock/xlockmore.README","http://openwall.com/lists/oss-security/2013/07/16/8","http://openwall.com/lists/oss-security/2013/07/18/6"],"products":["david_bagley:xlockmore"],"source":"nvd","synced_at":"2026-10-19T20:33:06.232976534+00:00"},"epss":{"cve":"CVE-2013-4143","score":0.00397,"percentile":0.33948,"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."]}