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Vulnerability record · CVE-2017-6891 · published 22 May 2017

CVE-2017-6891: Gnu libtasn1 out-of-bounds write vulnerability

Gnu · Libtasn1

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.

8.8 CVSS 3.1 High EPSS 5.6% · top 7.4% CWE-787 · Out-of-bounds write
8.8CVSS 3.1 base score, v2 6.8
5.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
20References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://git.savannah.gnu.org/gitweb/?p=libtasn1.git%3Ba=commit%3Bh=5520704d075802df25ce4ffccc010ba1641bd484
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00018.html Broken Link
http://www.debian.org/security/2017/dsa-3861 Third Party Advisory
http://www.securityfocus.com/bid/98641 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038619 Third Party AdvisoryVDB Entry
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.ap
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.ap
https://secuniaresearch.flexerasoftware.com/advisories/76125/ Permissions Required
https://secuniaresearch.flexerasoftware.com/secunia_research/2017-11/ PatchThird Party Advisory
https://security.gentoo.org/glsa/201710-11 Third Party Advisory
http://git.savannah.gnu.org/gitweb/?p=libtasn1.git%3Ba=commit%3Bh=5520704d075802df25ce4ffccc010ba1641bd484
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00018.html Broken Link
http://www.debian.org/security/2017/dsa-3861 Third Party Advisory
http://www.securityfocus.com/bid/98641 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038619 Third Party AdvisoryVDB Entry
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.ap
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.ap
https://secuniaresearch.flexerasoftware.com/advisories/76125/ Permissions Required
https://secuniaresearch.flexerasoftware.com/secunia_research/2017-11/ PatchThird Party Advisory
https://security.gentoo.org/glsa/201710-11 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2017-6891), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.