CVE-2018-6003

Name: CVE-2018-6003
Creator: NVD / NIST
Published: 2018-01-22T20:29:00.493+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.84%

Last modified Jun 17, 2026

CVE-2018-6003 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue was discovered in the _asn1_decode_simple_ber function in decoding.c in GNU Libtasn1 before 4.13. Unlimited recursion in the BER decoder leads to stack exhaustion and DoS.. EPSS estimates a 2.84% chance of exploitation in the next 30 days.

Description

An issue was discovered in the _asn1_decode_simple_ber function in decoding.c in GNU Libtasn1 before 4.13. Unlimited recursion in the BER decoder leads to stack exhaustion and DoS.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

2.84%

84.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-674

Affected Software

Vendor	Product	Versions
Gnu	Libtasn1	<= 4.12
Debian	Debian Linux	9.0
Fedoraproject	Fedora	26
Fedoraproject	Fedora	27

References

http://git.savannah.nongnu.org/cgit/libtasn1.git/commit/?id=c593ae84cfcde8fea45787e53950e0ac71e9ca97Patch, Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1535926Issue Tracking, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1076832Issue Tracking, Third Party Advisory
https://gitlab.com/gnutls/libtasn1/commit/946565d8eb05fbf7970ea366e817581bb5a90910Third Party Advisory
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://www.debian.org/security/2018/dsa-4106Third Party Advisory
http://git.savannah.nongnu.org/cgit/libtasn1.git/commit/?id=c593ae84cfcde8fea45787e53950e0ac71e9ca97Patch, Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1535926Issue Tracking, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1076832Issue Tracking, Third Party Advisory
https://gitlab.com/gnutls/libtasn1/commit/946565d8eb05fbf7970ea366e817581bb5a90910Third Party Advisory
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://www.debian.org/security/2018/dsa-4106Third Party Advisory

Timeline

Published: Jan 22, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-6003?

An issue was discovered in the _asn1_decode_simple_ber function in decoding.c in GNU Libtasn1 before 4.13. Unlimited recursion in the BER decoder leads to stack exhaustion and DoS.

How severe is CVE-2018-6003?

CVE-2018-6003 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.84% probability of exploitation in the next 30 days.

How do I fix CVE-2018-6003?

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.

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Source: NVD / NIST