Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2018-10845

22
FAUCET Score

CVE-2018-10845 describes a Lucky Thirteen style timing attack vulnerability in the GnuTLS implementation of HMAC-SHA-384, affecting products from Canonical, Debian, Fedora Project, GNU, and Red Hat. This medium-severity flaw (CVSS 5.9) allows remote attackers to perform distinguishing and plaintext recovery attacks through statistical analysis of timing data from crafted packets, with high impact on confidentiality. Despite the potential for remote exploitation with high complexity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.6.12CPE matchmatch criteria
cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.62%
Probability of exploitation in next 30 days
EPSS Percentile
88.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0362 is in the 84th percentile among its peer group of 19,958 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: gnutls-0:3.3.29-8.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: gnutls
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: gnutls

Vendor Advisories (1)

redhatCVE-2018-10845Moderate

gnutls: HMAC-SHA-384 vulnerable to Lucky thirteen attack due to use of wrong constant

Aug 21, 2018

References

access.redhat.com / errata/RHSA-2018:3050
Third Party Advisory
access.redhat.com / errata/RHSA-2018:3505
Broken Link
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
eprint.iacr.org / 2018/747
Third Party Advisory
gitlab.com / gnutls/gnutls/merge_requests/657
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2018/10/msg00022.html
Third Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/ILMOWPKMTZAIMK5F32TUMO34XCABUCFJ
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/WDYY3R4F5CUTFAMXH2C5NKYFVDEJLTT7
usn.ubuntu.com / 3999-1
Third Party Advisory
securityfocus.com / bid/105138
Third Party AdvisoryVDB Entry