FreeBSD : p7zip -- out-of-bounds read vulnerability (d706a3a3-4a7c-11e6-97f7-5453ed2e2b49)

Medium Nessus Plugin ID 92346


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


Cisco Talos reports :

An out-of-bounds read vulnerability exists in the way 7-Zip handles Universal Disk Format (UDF) files.

Central to 7-Zip's processing of UDF files is the CInArchive::ReadFileItem method. Because volumes can have more than one partition map, their objects are kept in an object vector. To start looking for an item, this method tries to reference the proper object using the partition map's object vector and the 'PartitionRef' field from the Long Allocation Descriptor. Lack of checking whether the 'PartitionRef' field is bigger than the available amount of partition map objects causes a read out-of-bounds and can lead, in some circumstances, to arbitrary code execution.


Update the affected package.

See Also

Plugin Details

Severity: Medium

ID: 92346

File Name: freebsd_pkg_d706a3a34a7c11e697f75453ed2e2b49.nasl

Version: $Revision: 2.4 $

Type: local

Published: 2016/07/18

Modified: 2016/10/20

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 6.8

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


Base Score: 8.8

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:p7zip, cpe:/o:freebsd:freebsd

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

Patch Publication Date: 2016/07/15

Vulnerability Publication Date: 2016/05/11

Reference Information

CVE: CVE-2016-2335

IAVA: 2016-A-0139