{"id":"UBUNTU-CVE-2013-7439","details":"Multiple off-by-one errors in the (1) MakeBigReq and (2) SetReqLen macros in include/X11/Xlibint.h in X11R6.x and libX11 before 1.6.0 allow remote attackers to have unspecified impact via a crafted request, which triggers a buffer overflow.","modified":"2026-02-04T02:17:50.863233Z","published":"2015-04-09T00:00:00Z","related":["USN-2568-1"],"upstream":["CVE-2013-7439"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2013-7439"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2015/04/08/4"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-2568-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2013-7439"}],"affected":[{"package":{"name":"libxrender","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/libxrender@1:0.9.8-1build0.14.04.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:0.9.8-1build0.14.04.1"}]}],"versions":["1:0.9.8-1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libxrender-dev","binary_version":"1:0.9.8-1build0.14.04.1"},{"binary_name":"libxrender1","binary_version":"1:0.9.8-1build0.14.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2013/UBUNTU-CVE-2013-7439.json"}}],"schema_version":"1.7.3","severity":[{"type":"Ubuntu","score":"medium"}]}