CVE-2018-10845

Name: CVE-2018-10845
Creator: NVD / NIST
Published: 2018-08-22T13:29:00.44+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10EPSS 3.62%

Last modified Jun 17, 2026

CVE-2018-10845 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. It was found that the GnuTLS implementation of HMAC-SHA-384 was vulnerable to a Lucky thirteen style attack. Remote attackers could use this flaw to conduct distinguishing attacks and plain text recovery attacks via statistical analysis of timing data using crafted packets.. EPSS estimates a 3.62% chance of exploitation in the next 30 days.

Description

It was found that the GnuTLS implementation of HMAC-SHA-384 was vulnerable to a Lucky thirteen style attack. Remote attackers could use this flaw to conduct distinguishing attacks and plain text recovery attacks via statistical analysis of timing data using crafted packets.

Metrics

CVSS 3.1

5.9/10

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

EPSS Probability

3.62%

88.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Gnu	Gnutls	< 3.6.12
Redhat	Enterprise Linux Desktop	7.0
Redhat	Enterprise Linux Server	7.0
Redhat	Enterprise Linux Workstation	7.0
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	18.10
Canonical	Ubuntu Linux	19.04
Fedoraproject	Fedora	31
Fedoraproject	Fedora	32
Debian	Debian Linux	8.0

References

http://www.securityfocus.com/bid/105138Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2018:3050Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3505Broken Link
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10845Issue Tracking, Patch, Third Party Advisory
https://eprint.iacr.org/2018/747Third Party Advisory
https://gitlab.com/gnutls/gnutls/merge_requests/657Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/10/msg00022.htmlThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ILMOWPKMTZAIMK5F32TUMO34XCABUCFJ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WDYY3R4F5CUTFAMXH2C5NKYFVDEJLTT7/
https://usn.ubuntu.com/3999-1/Third Party Advisory
http://www.securityfocus.com/bid/105138Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2018:3050Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3505Broken Link
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10845Issue Tracking, Patch, Third Party Advisory
https://eprint.iacr.org/2018/747Third Party Advisory
https://gitlab.com/gnutls/gnutls/merge_requests/657Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/10/msg00022.htmlThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ILMOWPKMTZAIMK5F32TUMO34XCABUCFJ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WDYY3R4F5CUTFAMXH2C5NKYFVDEJLTT7/
https://usn.ubuntu.com/3999-1/Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2018-10845?

How severe is CVE-2018-10845?

CVE-2018-10845 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 3.62% probability of exploitation in the next 30 days.

How do I fix CVE-2018-10845?

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-2018-10845?

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

Scan your code now

Source: NVD / NIST