VDB-101498 · CVE-2017-6027 · BID 97174

3S-Smart CODESYS Web Server up to 2.3 File Upload unrestricted upload

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.
8.5	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in 3S-Smart CODESYS Web Server up to 2.3. Affected by this issue is some unknown functionality of the component File Upload. Such manipulation leads to unrestricted upload. This vulnerability is listed as CVE-2017-6027. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in 3S-Smart CODESYS Web Server up to 2.3 (Web Server) and classified as critical. Affected by this issue is an unknown code block of the component File Upload. The manipulation with an unknown input leads to a unrestricted upload vulnerability. Using CWE to declare the problem leads to CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. Impacted is confidentiality, integrity, and availability. CVE summarizes:

An Arbitrary File Upload issue was discovered in 3S-Smart Software Solutions GmbH CODESYS Web Server. The following versions of CODESYS Web Server, part of the CODESYS WebVisu web browser visualization software, are affected: CODESYS Web Server Versions 2.3 and prior. A specially crafted web server request may allow the upload of arbitrary files (with a dangerous type) to the CODESYS Web Server without authorization which may allow remote code execution.

The bug was discovered 03/28/2017. The weakness was presented 05/19/2017 (Website). The advisory is available at securityfocus.com. This vulnerability is handled as CVE-2017-6027 since 02/16/2017. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1608.002 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 51 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 97174†). See VDB-101497 for similar entry. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Web Server

Vendor

3S-Smart

Name

CODESYS Web Server

Version

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Unrestricted upload
CWE: CWE-434 / CWE-284 / CWE-266
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

02/16/2017 🔍
03/28/2017 +40 days 🔍
03/28/2017 +0 days 🔍
05/18/2017 +51 days 🔍
05/19/2017 +1 days 🔍
05/19/2017 +0 days 🔍
12/25/2020 +1316 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Researcher: David Atch
Status: Not defined

CVE: CVE-2017-6027 (🔍)
GCVE (CVE): GCVE-0-2017-6027
GCVE (VulDB): GCVE-100-101498
SecurityFocus: 97174 - CODESYS Web Server Stack Based Buffer Overflow and File Upload Vulnerabilities

See also: 🔍

Entryinfo

Created: 05/19/2017 14:07
Updated: 12/25/2020 08:31
Changes: 05/19/2017 14:07 (60), 07/29/2020 15:03 (3), 12/25/2020 08:31 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.