VDB-117124 · CVE-2018-8835 · BID 103972

Advantech WebAccess HMI Designer 2.1.7.32 pm3 File double free

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.
6.5$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Advantech WebAccess HMI Designer 2.1.7.32. The impacted element is an unknown function of the component pm3 File Handler. Executing a manipulation can lead to double free. The identification of this vulnerability is CVE-2018-8835. The attack can only be executed locally. There is no exploit available.

Detailsinfo

A vulnerability was found in Advantech WebAccess HMI Designer 2.1.7.32 (SCADA Software). It has been declared as critical. This vulnerability affects an unknown function of the component pm3 File Handler. The manipulation with an unknown input leads to a double free vulnerability. The CWE definition for the vulnerability is CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Double free vulnerabilities in Advantech WebAccess HMI Designer 2.1.7.32 and prior caused by processing specially crafted .pm3 files may allow remote code execution.

The bug was discovered 04/20/2018. The weakness was shared 04/25/2018 by Steven Seeley with Zero Day Initiative (Website). The advisory is shared for download at securityfocus.com. This vulnerability was named CVE-2018-8835 since 03/20/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. 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 5 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 103972†). The entries VDB-117123 and VDB-117125 are related to this item. Once again VulDB remains the best source for 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: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Double free
CWE: CWE-415 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/20/2018 🔍
04/20/2018 +31 days 🔍
04/24/2018 +4 days 🔍
04/25/2018 +0 days 🔍
04/25/2018 +0 days 🔍
04/26/2018 +1 days 🔍
01/31/2020 +645 days 🔍

Sourcesinfo

Vendor: advantech.com

Advisory: securityfocus.com⛔
Researcher: Steven Seeley
Organization: Zero Day Initiative
Status: Not defined

CVE: CVE-2018-8835 (🔍)
GCVE (CVE): GCVE-0-2018-8835
GCVE (VulDB): GCVE-100-117124
SecurityFocus: 103972 - Advantech WebAccess HMI Designer Multiple Security Vulnerabilities

See also: 🔍

Entryinfo

Created: 04/26/2018 10:21
Updated: 01/31/2020 17:56
Changes: 04/26/2018 10:21 (60), 01/31/2020 17:56 (5)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you know our Splunk app?

Download it now for free!