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Vulnerability record · CVE-2018-10846 · published 22 August 2018

CVE-2018-10846: Gnutls broken cryptographic algorithm vulnerability

Gnu · Gnutls

A cache-based side channel in GnuTLS implementation that leads to plain text recovery in cross-VM attack setting was found. An attacker could use a combination of "Just in Time" Prime+probe attack in combination with Lucky-13 attack to recover plain text using crafted packets.

5.6 CVSS 3.1 Medium EPSS 0.39% · top 69.4% CWE-385 · CWE-385CWE-327 · Broken cryptographic algorithm
5.6CVSS 3.1 base score, v2 1.9
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
20References
17 Jun 2026Last modified by NVD

Description

A cache-based side channel in GnuTLS implementation that leads to plain text recovery in cross-VM attack setting was found. An attacker could use a combination of "Just in Time" Prime+probe attack in combination with Lucky-13 attack to recover plain text using crafted packets.

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

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/105138 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2018:3050 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3505 Broken Link
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10846 Issue TrackingPatchThird Party Advisory
https://eprint.iacr.org/2018/747 Third Party Advisory
https://gitlab.com/gnutls/gnutls/merge_requests/657 Issue TrackingPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/10/msg00022.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ILMOWPKMTZAIMK5F32TUMO3
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WDYY3R4F5CUTFAMXH2C5NKY
https://usn.ubuntu.com/3999-1/ Third Party Advisory
http://www.securityfocus.com/bid/105138 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2018:3050 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3505 Broken Link
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10846 Issue TrackingPatchThird Party Advisory
https://eprint.iacr.org/2018/747 Third Party Advisory
https://gitlab.com/gnutls/gnutls/merge_requests/657 Issue TrackingPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/10/msg00022.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ILMOWPKMTZAIMK5F32TUMO3
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WDYY3R4F5CUTFAMXH2C5NKY
https://usn.ubuntu.com/3999-1/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-10846), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.