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 a security update for nss-util.

Description

The remote Redhat Enterprise Linux 6 / 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2017:1102 advisory.

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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL nss-util package based on the guidance in RHSA-2017:1102.

Plugin Details

Severity: Critical

ID: 99503

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

Version: 3.13

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 4/20/2017

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: 5.9

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2017-5461

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: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:nss-util, cpe:/o:redhat:rhel_eus:7.2, cpe:/o:redhat:rhel_tus:6.6, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:rhel_aus:6.6, cpe:/o:redhat:rhel_eus:6.7, cpe:/o:redhat:rhel_aus:6.4, cpe:/o:redhat:rhel_aus:6.5, p-cpe:/a:redhat:enterprise_linux:nss-util-devel, cpe:/o:redhat:rhel_tus:6.5

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

Detections

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