Advantech WebAccess up to 8.2 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Advantech WebAccess up to 8.2. This vulnerability affects unknown code. Executing a manipulation can lead to memory corruption. This vulnerability is handled as CVE-2017-14016. The attack can be executed remotely. Additionally, an exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Advantech WebAccess up to 8.2 (SCADA Software) and classified as critical. This vulnerability affects an unknown code block. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A Stack-based Buffer Overflow issue was discovered in Advantech WebAccess versions prior to V8.2_20170817. The application lacks proper validation of the length of user-supplied data prior to copying it to a stack-based buffer, which could allow an attacker to execute arbitrary code under the context of the process.

The bug was discovered 11/02/2017. The weakness was released 11/06/2017 by Steven Seeley (Website). The advisory is shared for download at securityfocus.com. This vulnerability was named CVE-2017-14016 since 08/30/2017. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are unknown but a public exploit is available.

It is possible to download the exploit at exploit-db.com. It is declared as highly functional. The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 11860 (Advantech WebAccess Multiple Security Vulnerabilities).

Upgrading to version 8.2_20170817 eliminates this vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (43340) and SecurityFocus (BID 101685†). Entries connected to this vulnerability are available at VDB-105985, VDB-105986, VDB-105987 and VDB-105988. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.1

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.3
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: Highly functional
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: advantech_webaccess_webvrpcs_bof.rb
MetaSploit Name: Advantech WebAccess Webvrpcs Service Opcode 80061 Stack Buffer Overflow
MetaSploit File: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: WebAccess 8.2_20170817

Timelineinfo

08/30/2017 🔍
11/02/2017 +64 days 🔍
11/02/2017 +0 days 🔍
11/06/2017 +4 days 🔍
11/06/2017 +0 days 🔍
11/07/2017 +1 days 🔍
12/04/2019 +757 days 🔍

Sourcesinfo

Vendor: advantech.com

Advisory: securityfocus.com⛔
Researcher: Steven Seeley
Status: Not defined

CVE: CVE-2017-14016 (🔍)
GCVE (CVE): GCVE-0-2017-14016
GCVE (VulDB): GCVE-100-109156
SecurityFocus: 101685 - Advantech WebAccess Multiple Remote Code Execution Vulnerabilities

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

Entryinfo

Created: 11/07/2017 08:02
Updated: 12/04/2019 16:36
Changes: 11/07/2017 08:02 (67), 12/04/2019 16:36 (7)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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