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RHEL 5 / 6 : libgcrypt (RHSA-2013:1457)

low Nessus Plugin ID 70600

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Synopsis

The remote Red Hat host is missing one or more security updates.

Description

An updated libgcrypt package that fixes one security issue is now available for Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The libgcrypt library provides general-purpose implementations of various cryptographic algorithms.

It was found that GnuPG was vulnerable to the Yarom/Falkner flush+reload cache side-channel attack on the RSA secret exponent. An attacker able to execute a process on the logical CPU that shared the L3 cache with the GnuPG process (such as a different local user or a user of a KVM guest running on the same host with the kernel same-page merging functionality enabled) could possibly use this flaw to obtain portions of the RSA secret key. (CVE-2013-4242)

All libgcrypt users are advised to upgrade to this updated package, which contains a backported patch to correct this issue.

Solution

Update the affected libgcrypt, libgcrypt-debuginfo and / or libgcrypt-devel packages.

See Also

https://access.redhat.com/errata/RHSA-2013:1457

https://access.redhat.com/security/cve/cve-2013-4242

Plugin Details

Severity: Low

ID: 70600

File Name: redhat-RHSA-2013-1457.nasl

Version: 1.14

Type: local

Agent: unix

Published: 10/25/2013

Updated: 1/14/2021

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

CVSS v2

Risk Factor: Low

Base Score: 1.9

Temporal Score: 1.4

Vector: CVSS2#AV:L/AC:M/Au:N/C:P/I:N/A:N

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:5, p-cpe:/a:redhat:enterprise_linux:libgcrypt-debuginfo, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:redhat:enterprise_linux:libgcrypt, p-cpe:/a:redhat:enterprise_linux:libgcrypt-devel, cpe:/o:redhat:enterprise_linux:6.4

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: 10/24/2013

Vulnerability Publication Date: 8/19/2013

Reference Information

CVE: CVE-2013-4242

BID: 61464

RHSA: 2013:1457