{"cve":"CVE-2015-4021","nvd":{"published":"2015-06-09T18:59:04.567","modified":"2026-06-17T00:26:38.500","status":"Modified","description":"The phar_parse_tarfile function in ext/phar/tar.c in PHP before 5.4.41, 5.5.x before 5.5.25, and 5.6.x before 5.6.9 does not verify that the first character of a filename is different from the \\0 character, which allows remote attackers to cause a denial of service (integer underflow and memory corruption) via a crafted entry in a tar archive.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-189"],"references":["http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html","http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158616.html","http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158915.html","http://lists.fedoraproject.org/pipermail/package-announce/2015-May/159031.html","http://lists.opensuse.org/opensuse-updates/2015-06/msg00002.html"],"products":["apple:mac_os_x","php:php","redhat:enterprise_linux","redhat:enterprise_linux_desktop","redhat:enterprise_linux_hpc_node","redhat:enterprise_linux_hpc_node_eus","redhat:enterprise_linux_server","redhat:enterprise_linux_server_eus","redhat:enterprise_linux_workstation"],"source":"nvd","synced_at":"2026-10-19T20:36:40.444340523+00:00"},"epss":{"cve":"CVE-2015-4021","score":0.2048,"percentile":0.97508,"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."]}