CVE-2018-10844

MEDIUM

GnuTLS < 3.6.12 - Timing Side-Channel Attack via HMAC-SHA-256

Title source: llm
STIX 2.1

Description

It was found that the GnuTLS implementation of HMAC-SHA-256 was vulnerable to a Lucky thirteen style attack. Remote attackers could use this flaw to conduct distinguishing attacks and plaintext-recovery attacks via statistical analysis of timing data using crafted packets.

References (10)

Core 10
Core References
Third Party Advisory x_refsource_misc
https://eprint.iacr.org/2018/747
Issue Tracking, Patch, Third Party Advisory x_refsource_confirm
https://gitlab.com/gnutls/gnutls/merge_requests/657
Broken Link vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:3505
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/105138
Issue Tracking, Patch, Third Party Advisory x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10844
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:3050
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/10/msg00022.html
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3999-1/

Scores

CVSS v3 5.9
EPSS 0.0025
EPSS Percentile 48.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-327 CWE-385
Status published
Products (11)
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 18.10
canonical/ubuntu_linux 19.04
debian/debian_linux 8.0
fedoraproject/fedora 31
fedoraproject/fedora 32
gnu/gnutls < 3.6.12
redhat/enterprise_linux_desktop 7.0
redhat/enterprise_linux_server 7.0
... and 1 more
Published Aug 22, 2018
Tracked Since Feb 18, 2026