{"id":"RLSA-2020:4484","summary":"Moderate: expat security update","details":"Expat is a C library for parsing XML documents.\n\nSecurity Fix(es):\n\n* expat: large number of colons in input makes parser consume high amount of resources, leading to DoS (CVE-2018-20843)\n\n* expat: heap-based buffer over-read via crafted XML input (CVE-2019-15903)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Rocky Linux 8.3 Release Notes linked from the References section.","modified":"2026-03-11T05:55:18.371663Z","published":"2020-11-03T12:09:00Z","upstream":["CVE-2018-20843","CVE-2019-15903"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2020:4484"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1723723"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1752592"}],"affected":[{"package":{"name":"expat","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/expat?distro=rocky-linux-8-4-legacy&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.2.5-4.el8"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2020:4484.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}