CVE-2017-6891

Name: CVE-2017-6891
Creator: NVD / NIST
Published: 2017-05-22T19:29:00.25+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 5.58%

Last modified Jun 17, 2026

CVE-2017-6891 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 5.58% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

5.58%

91.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Gnu	Libtasn1	4.10
Debian	Debian Linux	8.0
Apache	Bookkeeper	4.12.1

References

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

Timeline

Published: May 22, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-6891?

How severe is CVE-2017-6891?

CVE-2017-6891 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 5.58% probability of exploitation in the next 30 days.

How do I fix CVE-2017-6891?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-6891?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST