VDB-94512 · CVE-2016-4047 · OpenVAS 103021

Open-Xchange OX AppSuite up to 7.8.1-rev7 DOCS/XLSX File Access xml external entity reference

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.2$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Open-Xchange OX AppSuite up to 7.8.1-rev7. Affected by this vulnerability is an unknown functionality of the component DOCS/XLSX File Handler. The manipulation results in xml external entity reference (Access). This vulnerability is reported as CVE-2016-4047. The attack can be launched remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Open-Xchange OX AppSuite up to 7.8.1-rev7 (Groupware Software). Affected is an unknown code block of the component DOCS/XLSX File Handler. The manipulation with an unknown input leads to a xml external entity reference vulnerability (Access). CWE is classifying the issue as CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. This is going to have an impact on confidentiality. CVE summarizes:

An issue was discovered in Open-Xchange OX App Suite before 7.8.1-rev8. References to external Open XML document type definitions (.dtd resources) can be placed within .docx and .xslx files. Those resources were requested when parsing certain parts of the generated document. As a result an attacker can track access to a manipulated document. Usage of a document may get tracked and information about internal infrastructure may get exposed.

The bug was discovered 06/22/2016. The weakness was disclosed 12/15/2016 (Website). The advisory is shared for download at securityfocus.com. This vulnerability is traded as CVE-2016-4047 since 04/20/2016. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 176 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 7.8.1-rev8 eliminates this vulnerability.

The entries VDB-94507, VDB-94509, VDB-94510 and VDB-94511 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Access
Class: Xml external entity reference / Access
CWE: CWE-611 / CWE-610
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

OpenVAS ID: 103021
OpenVAS Name: Open-Xchange (OX) AppSuite XML External Entity Information Disclosure Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: OX AppSuite 7.8.1-rev8

Timelineinfo

04/20/2016 🔍
06/22/2016 +63 days 🔍
12/15/2016 +176 days 🔍
12/15/2016 +0 days 🔍
12/15/2016 +0 days 🔍
10/08/2022 +2123 days 🔍

Sourcesinfo

Vendor: open-xchange.com

Advisory: securityfocus.com⛔
Status: Not defined

CVE: CVE-2016-4047 (🔍)
GCVE (CVE): GCVE-0-2016-4047
GCVE (VulDB): GCVE-100-94512
SecurityTracker: 1036157

See also: 🔍

Entryinfo

Created: 12/15/2016 16:52
Updated: 10/08/2022 19:02
Changes: 12/15/2016 16:52 (65), 07/08/2019 06:53 (2), 10/08/2022 19:02 (4)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!