FreeBSD : expat -- denial of service vulnerability on malformed input (57b3aba7-1e25-11e6-8dd3-002590263bf5)

critical Nessus Plugin ID 91267
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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

Gustavo Grieco reports :

The Expat XML parser mishandles certain kinds of malformed input documents, resulting in buffer overflows during processing and error reporting. The overflows can manifest as a segmentation fault or as memory corruption during a parse operation. The bugs allow for a denial of service attack in many applications by an unauthenticated attacker, and could conceivably result in remote code execution.

Solution

Update the affected packages.

See Also

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=209360

https://www.openwall.com/lists/oss-security/2016/05/17/12

http://www.nessus.org/u?5bf6d850

Plugin Details

Severity: Critical

ID: 91267

File Name: freebsd_pkg_57b3aba71e2511e68dd3002590263bf5.nasl

Version: 2.11

Type: local

Published: 5/20/2016

Updated: 1/4/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

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

CVSS v3

Risk Factor: Critical

Base Score: 9.8

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:expat, p-cpe:/a:freebsd:freebsd:linux-c6-expat, p-cpe:/a:freebsd:freebsd:linux-c7-expat, cpe:/o:freebsd:freebsd

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

Patch Publication Date: 5/20/2016

Vulnerability Publication Date: 5/17/2016

Reference Information

CVE: CVE-2016-0718