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RHEL 7 : json-c (RHSA-2014:0703)

medium Nessus Plugin ID 76898

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Synopsis

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

Description

Updated json-c packages that fix two security issues are now available for Red Hat Enterprise Linux 7.

The Red Hat Security Response Team has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

JSON-C implements a reference counting object model that allows you to easily construct JSON objects in C, output them as JSON-formatted strings, and parse JSON-formatted strings back into the C representation of JSON objects.

Multiple buffer overflow flaws were found in the way the json-c library handled long strings in JSON documents. An attacker able to make an application using json-c parse excessively large JSON input could cause the application to crash. (CVE-2013-6370)

A denial of service flaw was found in the implementation of hash arrays in json-c. An attacker could use this flaw to make an application using json-c consume an excessive amount of CPU time by providing a specially crafted JSON document that triggers multiple hash function collisions. To mitigate this issue, json-c now uses a different hash function and randomization to reduce the chance of an attacker successfully causing intentional collisions. (CVE-2013-6371)

These issues were discovered by Florian Weimer of the Red Hat Product Security Team.

All json-c users are advised to upgrade to these updated packages, which contain backported patches to correct these issues.

Solution

Update the affected packages.

See Also

https://access.redhat.com/errata/RHSA-2014:0703

https://access.redhat.com/security/cve/cve-2013-6371

https://access.redhat.com/security/cve/cve-2013-6370

Plugin Details

Severity: Medium

ID: 76898

File Name: redhat-RHSA-2014-0703.nasl

Version: 1.14

Type: local

Agent: unix

Published: 7/30/2014

Updated: 1/14/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 4.4

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:7.3, cpe:/o:redhat:enterprise_linux:7.4, cpe:/o:redhat:enterprise_linux:7.5, p-cpe:/a:redhat:enterprise_linux:json-c-devel, p-cpe:/a:redhat:enterprise_linux:json-c, cpe:/o:redhat:enterprise_linux:7.7, p-cpe:/a:redhat:enterprise_linux:json-c-debuginfo, p-cpe:/a:redhat:enterprise_linux:json-c-doc, cpe:/o:redhat:enterprise_linux:7.6

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: 6/10/2014

Vulnerability Publication Date: 4/22/2014

Reference Information

CVE: CVE-2013-6370, CVE-2013-6371

BID: 66715, 66720

RHSA: 2014:0703