RHEL 6 / 7 : nss-util (RHSA-2017:1102)

critical Nessus Plugin ID 99503

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Synopsis

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

Description

An update for nss-util is now available for Red Hat Enterprise Linux 6.2 Advanced Update Support, Red Hat Enterprise Linux 6.4 Advanced Update Support, Red Hat Enterprise Linux 6.5 Advanced Update Support, Red Hat Enterprise Linux 6.5 Telco Extended Update Support, Red Hat Enterprise Linux 6.6 Advanced Update Support, Red Hat Enterprise Linux 6.6 Telco Extended Update Support, Red Hat Enterprise Linux 6.7 Extended Update Support, and Red Hat Enterprise Linux 7.2 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The nss-util packages provide utilities for use with the Network Security Services (NSS) libraries.

Security Fix(es) :

* An out-of-bounds write flaw was found in the way NSS performed certain Base64-decoding operations. An attacker could use this flaw to create a specially crafted certificate which, when parsed by NSS, could cause it to crash or execute arbitrary code, using the permissions of the user running an application compiled against the NSS library. (CVE-2017-5461)

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Ronald Crane as the original reporter.

Solution

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

See Also

https://access.redhat.com/errata/RHSA-2017:1102

https://access.redhat.com/security/cve/cve-2017-5461

Plugin Details

Severity: Critical

ID: 99503

File Name: redhat-RHSA-2017-1102.nasl

Version: 3.12

Type: local

Agent: unix

Published: 4/20/2017

Updated: 10/24/2019

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

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

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

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:nss-util, p-cpe:/a:redhat:enterprise_linux:nss-util-debuginfo, p-cpe:/a:redhat:enterprise_linux:nss-util-devel, cpe:/o:redhat:enterprise_linux:6.2, cpe:/o:redhat:enterprise_linux:6.4, cpe:/o:redhat:enterprise_linux:6.5, cpe:/o:redhat:enterprise_linux:6.6, cpe:/o:redhat:enterprise_linux:6.7, cpe:/o:redhat:enterprise_linux:7.2

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: 4/20/2017

Vulnerability Publication Date: 5/11/2017

Reference Information

CVE: CVE-2017-5461

RHSA: 2017:1102