VDB-104747 · CVE-2016-7845 · BID 95680

GigaCC Office up to 2.3 File Upload Profile Image File Sharing access control

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.
6.4	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in GigaCC Office up to 2.3. Impacted is an unknown function of the component File Upload. The manipulation as part of Profile Image leads to access control (File Sharing). This vulnerability is uniquely identified as CVE-2016-7845. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in GigaCC Office up to 2.3 and classified as critical. This issue affects some unknown processing of the component File Upload. The manipulation as part of a Profile Image leads to a access control vulnerability (File Sharing). Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

GigaCC OFFICE ver.2.3 and earlier allows remote attackers to upload arbitrary files as a user profile image, which may be exploited for unauthorized file sharing.

The bug was discovered 01/19/2017. The weakness was disclosed 08/02/2017 by Masaki Yoshikawa (Website). It is possible to read the advisory at securityfocus.com. The identification of this vulnerability is CVE-2016-7845 since 09/09/2016. The attack may be initiated remotely. Required for exploitation is a simple authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 195 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 95680†). The entry VDB-104746 is pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

GigaCC

Name

Office

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: File Sharing
Class: Access control / File Sharing
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/09/2016 🔍
01/19/2017 +132 days 🔍
01/20/2017 +1 days 🔍
08/02/2017 +194 days 🔍
08/02/2017 +0 days 🔍
08/02/2017 +0 days 🔍
11/03/2019 +823 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Researcher: Masaki Yoshikawa
Status: Not defined

CVE: CVE-2016-7845 (🔍)
GCVE (CVE): GCVE-0-2016-7845
GCVE (VulDB): GCVE-100-104747
SecurityFocus: 95680 - GigaCC OFFICE OS Command Execution and Arbitrary File Upload Vulnerabilities

See also: 🔍

Entryinfo

Created: 08/02/2017 22:27
Updated: 11/03/2019 08:15
Changes: 08/02/2017 22:27 (61), 11/03/2019 08:15 (4)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.