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FreeBSD : qt4-xml -- XML Entity Expansion Denial of Service (89709e58-d497-11e3-a3d5-5453ed2e2b49)

medium Nessus Plugin ID 73881

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Synopsis

The remote FreeBSD host is missing a security-related update.

Description

Richard J. Moore reports :

QXmlSimpleReader in Qt versions prior to 5.2 supports expansion of internal entities in XML documents without placing restrictions to ensure the document does not cause excessive memory usage. If an application using this API processes untrusted data then the application may use unexpected amounts of memory if a malicious document is processed.

It is possible to construct XML documents using internal entities that consume large amounts of memory and other resources to process, this is known as the 'Billion Laughs' attack. Qt versions prior to 5.2 did not offer protection against this issue.

Solution

Update the affected package.

See Also

http://www.nessus.org/u?6cfa8350

http://www.nessus.org/u?c0639c59

Plugin Details

Severity: Medium

ID: 73881

File Name: freebsd_pkg_89709e58d49711e3a3d55453ed2e2b49.nasl

Version: 1.4

Type: local

Published: 5/6/2014

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:qt4-xml, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 5/5/2014

Vulnerability Publication Date: 12/5/2013

Reference Information

CVE: CVE-2013-4549