{"id":"UBUNTU-CVE-2018-6003","details":"An issue was discovered in the _asn1_decode_simple_ber function in decoding.c in GNU Libtasn1 before 4.13. Unlimited recursion in the BER decoder leads to stack exhaustion and DoS.","modified":"2026-04-22T13:14:52.267274Z","published":"2018-01-22T00:00:00Z","related":["USN-3547-1"],"upstream":["CVE-2018-6003"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-6003"},{"type":"REPORT","url":"http://git.savannah.nongnu.org/cgit/libtasn1.git/commit/?id=c593ae84cfcde8fea45787e53950e0ac71e9ca97"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1535926"},{"type":"REPORT","url":"https://bugzilla.suse.com/show_bug.cgi?id=1076832"},{"type":"REPORT","url":"https://gitlab.com/gnutls/libtasn1/commit/946565d8eb05fbf7970ea366e817581bb5a90910"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3547-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-6003"}],"affected":[{"package":{"name":"libtasn1-6","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/libtasn1-6@4.7-3ubuntu0.16.04.3?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.7-3ubuntu0.16.04.3"}]}],"versions":["4.5-2","4.7-2","4.7-3","4.7-3ubuntu0.16.04.1","4.7-3ubuntu0.16.04.2"],"ecosystem_specific":{"binaries":[{"binary_name":"libtasn1-3-bin","binary_version":"4.7-3ubuntu0.16.04.3"},{"binary_name":"libtasn1-6","binary_version":"4.7-3ubuntu0.16.04.3"},{"binary_name":"libtasn1-bin","binary_version":"4.7-3ubuntu0.16.04.3"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-6003.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"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}