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CVE-2017-6891

31
FAUCET Score

CVE-2017-6891 describes a stack-based buffer overflow vulnerability in the asn1_find_node() function of GnuTLS libtasn1 version 4.10, affecting various Apache, Debian, and GNU products utilizing this library. This high-severity vulnerability (CVSS 8.8) can be exploited remotely with low complexity, requiring user interaction to process a specially crafted assignments file, potentially leading to high impact on confidentiality, integrity, and availability. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, suggesting it is not currently a prominent threat.

Impacted Technologies

VendorProductVersion(s)CPE
4.10CPE matchmatch criteria
cpe:2.3:a:gnu:libtasn1:4.10:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
4.12.1CPE matchmatch criteria
cpe:2.3:a:apache:bookkeeper:4.12.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
5.58%
Probability of exploitation in next 30 days
EPSS Percentile
92.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0558 is in the 92nd percentile among its peer group of 14,825 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Vendor Patches (4)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libtasn1
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libtasn1
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Virtualization 3Fixed in: mingw-virt-viewer
redhatend of lifevia redhat_api
Product: Red Hat Satellite 6Fixed in: libtasn1

Vendor Advisories (1)

redhatCVE-2017-6891Low

libtasn1: Stack-based buffer overflow in asn1_find_node()

May 18, 2017

References

git.savannah.gnu.org / gitweb
lists.opensuse.org / opensuse-security-announce/2019-06/msg00018.html
Broken Link
lists.apache.org / thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
lists.apache.org / thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
secuniaresearch.flexerasoftware.com / advisories/76125
Permissions Required
secuniaresearch.flexerasoftware.com / secunia_research/2017-11
PatchThird Party Advisory
security.gentoo.org / glsa/201710-11
Third Party Advisory
debian.org / security/2017/dsa-3861
Third Party Advisory
securityfocus.com / bid/98641
Third Party AdvisoryVDB Entry
securitytracker.com / id/1038619
Third Party AdvisoryVDB Entry