Oracle Linux 6 / 7 : gnutls (ELSA-2016-0012) (SLOTH)

Medium Nessus Plugin ID 87799

Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

From Red Hat Security Advisory 2016:0012 :

Updated gnutls packages that fix one security issue are now available for Red Hat Enterprise Linux 6 and 7.

Red Hat Product Security 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 GnuTLS library provides support for cryptographic algorithms and for protocols such as Transport Layer Security (TLS).

A flaw was found in the way TLS 1.2 could use the MD5 hash function for signing ServerKeyExchange and Client Authentication packets during a TLS handshake. A man-in-the-middle attacker able to force a TLS connection to use the MD5 hash function could use this flaw to conduct collision attacks to impersonate a TLS server or an authenticated TLS client. (CVE-2015-7575)

All gnutls users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. For the update to take effect, all applications linked to the GnuTLS library must be restarted.

Solution

Update the affected gnutls packages.

See Also

https://oss.oracle.com/pipermail/el-errata/2016-January/005670.html

https://oss.oracle.com/pipermail/el-errata/2016-January/005671.html

Plugin Details

Severity: Medium

ID: 87799

File Name: oraclelinux_ELSA-2016-0012.nasl

Version: 2.11

Type: local

Agent: unix

Published: 2016/01/08

Updated: 2019/09/27

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 4.3

Temporal Score: 3.2

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

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:oracle:linux:gnutls, p-cpe:/a:oracle:linux:gnutls-c++, p-cpe:/a:oracle:linux:gnutls-dane, p-cpe:/a:oracle:linux:gnutls-devel, p-cpe:/a:oracle:linux:gnutls-guile, p-cpe:/a:oracle:linux:gnutls-utils, cpe:/o:oracle:linux:6, cpe:/o:oracle:linux:7

Required KB Items: Host/local_checks_enabled, Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2016/01/07

Vulnerability Publication Date: 2016/01/09

Reference Information

CVE: CVE-2015-7575

RHSA: 2016:0012