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

high Nessus Plugin ID 92346

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Synopsis

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

Description

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.

Solution

Update the affected package.

See Also

http://www.nessus.org/u?06eba330

http://www.nessus.org/u?96a3102c

Plugin Details

Severity: High

ID: 92346

File Name: freebsd_pkg_d706a3a34a7c11e697f75453ed2e2b49.nasl

Version: 2.9

Type: local

Published: 7/18/2016

Updated: 1/30/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2016-2335

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

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

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/15/2016

Vulnerability Publication Date: 5/11/2016

Reference Information

CVE: CVE-2016-2335