Advantech WebAccess up to 8.0 memory corruption

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.
8.8$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Advantech WebAccess up to 8.0. The affected element is an unknown function. The manipulation leads to memory corruption. This vulnerability is listed as CVE-2016-0856. The attack may be initiated remotely. In addition, an exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Advantech WebAccess up to 8.0 (SCADA Software). This issue affects an unknown code. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Multiple stack-based buffer overflows in Advantech WebAccess before 8.1 allow remote attackers to execute arbitrary code via unspecified vectors.

The weakness was presented 01/15/2016 by Positive Technologies with Positive Technologies (Website). The advisory is shared at ics-cert.us-cert.gov. The identification of this vulnerability is CVE-2016-0856 since 12/16/2015. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed by Chris Lyne and been published 3 years after the advisory. The exploit is available at exploit-db.com. It is declared as proof-of-concept. The commercial vulnerability scanner Qualys is able to test this issue with plugin 124563 (Advantech WebAccess Multiple Security Vulnerabilities).

Upgrading to version 8.1 eliminates this vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 20812.

The vulnerability is also documented in the databases at Exploit-DB (44376), SecurityFocus (BID 80745†) and Vulnerability Center (SBV-56336†). See VDB-80252, VDB-80253, VDB-80254 and VDB-80255 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.3

VulDB Base Score: 9.8
VulDB Temp Score: 8.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Chris Lyne
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

OpenVAS ID: 802155
OpenVAS Name: Advantech WebAccess Multiple Vulnerabilities Jan16
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Exploit Delay Time: 🔍

Upgrade: WebAccess 8.1
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

Fortigate IPS: 🔍

Timelineinfo

12/16/2015 🔍
01/13/2016 +28 days 🔍
01/13/2016 +0 days 🔍
01/14/2016 +0 days 🔍
01/15/2016 +1 days 🔍
01/15/2016 +0 days 🔍
02/01/2016 +17 days 🔍
03/30/2018 +787 days 🔍
03/30/2018 +0 days 🔍
07/23/2018 +115 days 🔍

Sourcesinfo

Vendor: advantech.com

Advisory: ics-cert.us-cert.gov
Researcher: Positive Technologies
Organization: Positive Technologies
Status: Confirmed

CVE: CVE-2016-0856 (🔍)
GCVE (CVE): GCVE-0-2016-0856
GCVE (VulDB): GCVE-100-80273
SecurityFocus: 80745 - Advantech WebAccess ICSA-16-014-01 Multiple Security Vulnerabilities
Vulnerability Center: 56336 - Advantech WebAccess before 8.1 Multiple Remote Stack-Based Buffer Overflow Vulnerabilities Allow Code Execution, Critical

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 01/15/2016 09:34
Updated: 07/23/2018 07:40
Changes: 01/15/2016 09:34 (66), 07/23/2018 07:40 (22)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to know what is going to be exploited?

We predict KEV entries!