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RHEL 7 : gnutls (RHSA-2018:3050)
medium Nessus Plugin ID 118516
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Synopsis
The remote Red Hat host is missing one or more security updates.Description
The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:3050 advisory.The gnutls packages provide the GNU Transport Layer Security (GnuTLS) library, which implements cryptographic algorithms and protocols such as SSL, TLS, and DTLS.
The following packages have been upgraded to a later upstream version: gnutls (3.3.29). (BZ#1561481)
Security Fix(es):
* gnutls: HMAC-SHA-256 vulnerable to Lucky thirteen attack due to not enough dummy function calls (CVE-2018-10844)
* gnutls: HMAC-SHA-384 vulnerable to Lucky thirteen attack due to use of wrong constant (CVE-2018-10845)
* gnutls: Just in Time PRIME + PROBE cache-based side channel attack can lead to plaintext recovery (CVE-2018-10846)
For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.6 Release Notes linked from the References section.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the affected packages.See Also
http://www.nessus.org/u?2b0cc1e7
http://www.nessus.org/u?e3b7d8c3
https://access.redhat.com/errata/RHSA-2018:3050
https://access.redhat.com/security/updates/classification/#moderate
https://bugzilla.redhat.com/show_bug.cgi?id=1375307
https://bugzilla.redhat.com/show_bug.cgi?id=1434091
https://bugzilla.redhat.com/show_bug.cgi?id=1444792
https://bugzilla.redhat.com/show_bug.cgi?id=1460125
https://bugzilla.redhat.com/show_bug.cgi?id=1464896
https://bugzilla.redhat.com/show_bug.cgi?id=1561481
https://bugzilla.redhat.com/show_bug.cgi?id=1582571
Plugin Details
Severity: Medium
ID: 118516
File Name: redhat-RHSA-2018-3050.nasl
Version: 1.11
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 10/31/2018
Updated: 4/15/2025
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.2
Vendor
Vendor Severity: Moderate
CVSS v2
Risk Factor: Medium
Base Score: 4.3
Temporal Score: 3.2
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N
CVSS Score Source: CVE-2018-10845
CVSS v3
Risk Factor: Medium
Base Score: 5.9
Temporal Score: 5.2
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:gnutls-dane, p-cpe:/a:redhat:enterprise_linux:gnutls, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:gnutls-c%2b%2b, p-cpe:/a:redhat:enterprise_linux:gnutls-utils, p-cpe:/a:redhat:enterprise_linux:gnutls-devel
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 10/30/2018
Vulnerability Publication Date: 8/22/2018