{"id":"UBUNTU-CVE-2017-6891","details":"Two errors in the \"asn1_find_node()\" function (lib/parser_aux.c) within GnuTLS libtasn1 version 4.10 can be exploited to cause a stacked-based buffer overflow by tricking a user into processing a specially crafted assignments file via the e.g. asn1Coding utility.","modified":"2026-04-22T11:30:33.031712Z","published":"2017-05-22T00:00:00Z","related":["USN-3309-1","USN-3309-2"],"upstream":["CVE-2017-6891"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-6891"},{"type":"REPORT","url":"https://secuniaresearch.flexerasoftware.com/advisories/76125/"},{"type":"REPORT","url":"https://secuniaresearch.flexerasoftware.com/secunia_research/2017-11/"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3309-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3309-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2017-6891"}],"affected":[{"package":{"name":"libtasn1-6","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/libtasn1-6@3.4-3ubuntu0.5?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4-3ubuntu0.5"}]}],"versions":["3.3-2","3.4-2","3.4-3","3.4-3ubuntu0.1","3.4-3ubuntu0.2","3.4-3ubuntu0.3","3.4-3ubuntu0.4"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"3.4-3ubuntu0.5","binary_name":"libtasn1-3-bin"},{"binary_version":"3.4-3ubuntu0.5","binary_name":"libtasn1-6"},{"binary_version":"3.4-3ubuntu0.5","binary_name":"libtasn1-bin"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-6891.json"}},{"package":{"name":"libtasn1-6","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/libtasn1-6@4.7-3ubuntu0.16.04.2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.7-3ubuntu0.16.04.2"}]}],"versions":["4.5-2","4.7-2","4.7-3","4.7-3ubuntu0.16.04.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"4.7-3ubuntu0.16.04.2","binary_name":"libtasn1-3-bin"},{"binary_version":"4.7-3ubuntu0.16.04.2","binary_name":"libtasn1-6"},{"binary_version":"4.7-3ubuntu0.16.04.2","binary_name":"libtasn1-bin"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-6891.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}