{"id":"CVE-2017-6891","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-6891","generatedAt":"2026-10-28T20:57:44.868Z","title":"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.…","description":"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.","published":"2017-05-22T19:29:00.000Z","lastModified":"2026-06-17T01:23:17.000Z","status":"Modified","sourceIdentifier":"PSIRT-CNA@flexerasoftware.com","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-787"],"affected":["gnu/libtasn1","debian/debian linux","apache/bookkeeper"],"epss":{"score":0.05585,"percentile":0.92847,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (5.58%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://git.savannah.gnu.org/gitweb/?p=libtasn1.git%3Ba=commit%3Bh=5520704d075802df25ce4ffccc010ba1641bd484","source":"PSIRT-CNA@flexerasoftware.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00018.html","tags":["Broken Link"],"source":"PSIRT-CNA@flexerasoftware.com"},{"url":"http://www.debian.org/security/2017/dsa-3861","tags":["Third Party Advisory"],"source":"PSIRT-CNA@flexerasoftware.com"},{"url":"http://www.securityfocus.com/bid/98641","tags":["Third Party Advisory","VDB Entry"],"source":"PSIRT-CNA@flexerasoftware.com"},{"url":"http://www.securitytracker.com/id/1038619","tags":["Third Party Advisory","VDB Entry"],"source":"PSIRT-CNA@flexerasoftware.com"},{"url":"https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E","source":"PSIRT-CNA@flexerasoftware.com"},{"url":"https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E","source":"PSIRT-CNA@flexerasoftware.com"},{"url":"https://secuniaresearch.flexerasoftware.com/advisories/76125/","tags":["Permissions Required"],"source":"PSIRT-CNA@flexerasoftware.com"},{"url":"https://secuniaresearch.flexerasoftware.com/secunia_research/2017-11/","tags":["Patch","Third Party Advisory"],"source":"PSIRT-CNA@flexerasoftware.com"},{"url":"https://security.gentoo.org/glsa/201710-11","tags":["Third Party Advisory"],"source":"PSIRT-CNA@flexerasoftware.com"},{"url":"http://git.savannah.gnu.org/gitweb/?p=libtasn1.git%3Ba=commit%3Bh=5520704d075802df25ce4ffccc010ba1641bd484","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00018.html","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.debian.org/security/2017/dsa-3861","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/98641","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1038619","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://secuniaresearch.flexerasoftware.com/advisories/76125/","tags":["Permissions Required"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://secuniaresearch.flexerasoftware.com/secunia_research/2017-11/","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/201710-11","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-6891","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}