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TI-2018-07661 Aliases CVE-2018-10845GHSA-m5px-2q2g-hxc2

Broken or risky cryptographic algorithm in [UNKNOWN] gnutls

Priority LOW 33CWE-385Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Partial Red Hat: 7 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-327.

Summary

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.

Why it matters now

EPSS 0.03606 89th percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 7 fixed, 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
[UNKNOWN]gnutlsall versions—No fix listedCNA
  • gnutls Vendor[UNKNOWN] Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 11

CPEVersionsRoleVendor
cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*before 3.6.12VulnerableGNU
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*18.10VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*19.04VulnerableCanonical
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*31VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*32VulnerableFedoraproject
  • cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:* Versions before 3.6.12 Vulnerable ·GNU
  • cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* Versions 18.10 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:* Versions 19.04 Vulnerable ·Canonical
  • cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* Versions 31 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* Versions 32 Vulnerable ·Fedoraproject
Show 1 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian

Remediation

Red Hat 1 advisory

  • RHSA-2018:3050 Released 2018-10-30 · Red Hat rating Moderate
    gnutls security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Client (v. 7) gnutls-3.3.29-8.el7, gnutls-dane-3.3.29-8.el7, gnutls-utils-3.3.29-8.el7
    • Red Hat Enterprise Linux Client Optional (v. 7) gnutls-c++-3.3.29-8.el7, gnutls-devel-3.3.29-8.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) gnutls-3.3.29-8.el7, gnutls-dane-3.3.29-8.el7, gnutls-utils-3.3.29-8.el7
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) gnutls-c++-3.3.29-8.el7, gnutls-devel-3.3.29-8.el7
    • Red Hat Enterprise Linux Server (v. 7) gnutls-3.3.29-8.el7, gnutls-3.3.29-8.el7.ppc, gnutls-c++-3.3.29-8.el7 +6
    • Red Hat Enterprise Linux Workstation (v. 7) gnutls-3.3.29-8.el7, gnutls-c++-3.3.29-8.el7, gnutls-dane-3.3.29-8.el7 +2
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) gnutls-3.3.29-8.el7, gnutls-c++-3.3.29-8.el7, gnutls-dane-3.3.29-8.el7 +2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    [UNKNOWN] gnutls — RHSA-2018:3050

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2018-07660 Broken or risky cryptographic algorithm in [UNKNOWN] gnutlsPriority LOW 33
    • TI-2018-07662 Broken or risky cryptographic algorithm in [UNKNOWN] gnutlsPriority LOW 25
    Show all 3 records → Advisory →
  • Advisory ·

    [UNKNOWN] gnutls — FEDORA-2020-d14280a6e8

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2018-07660 Broken or risky cryptographic algorithm in [UNKNOWN] gnutlsPriority LOW 33
    • TI-2018-07662 Broken or risky cryptographic algorithm in [UNKNOWN] gnutlsPriority LOW 25
    Show all 3 records → Advisory →
Show 1 more group
  • Advisory ·

    [UNKNOWN] gnutls — FEDORA-2020-f90fb78f70

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2018-07660 Broken or risky cryptographic algorithm in [UNKNOWN] gnutlsPriority LOW 33
    • TI-2018-07662 Broken or risky cryptographic algorithm in [UNKNOWN] gnutlsPriority LOW 25
    Show all 3 records → Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2018:3050
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2018:3050
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2018:3050
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2018:3050
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2018:3050
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2018:3050
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2018:3050
Not affected: 1 product
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-10845
  2. 2026-10-03 Alias added: GHSA-m5px-2q2g-hxc2

References

Patch 2

Advisory 7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences