VDB-104362 · CVE-2017-11517 · EDB-ID 41153

Geutebrueck GCore 1.3.8.42/1.4.2.37 URI GCoreServer.exe GET Request 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.
8.0	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Geutebrueck GCore 1.3.8.42/1.4.2.37. It has been declared as critical. Impacted is an unknown function of the file GCoreServer.exe of the component URI Handler. Executing a manipulation as part of GET Request can lead to memory corruption. This vulnerability is tracked as CVE-2017-11517. The attack can be launched remotely. Moreover, an exploit is present. The application of restrictive firewalling is recommended.

Detailsinfo

A vulnerability was found in Geutebrueck GCore 1.3.8.42/1.4.2.37. It has been declared as critical. This vulnerability affects some unknown processing of the file GCoreServer.exe of the component URI Handler. The manipulation as part of a GET Request 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:

Stack-based buffer overflow in GCoreServer.exe in the server in Geutebrueck Gcore 1.3.8.42 and 1.4.2.37 allows remote attackers to execute arbitrary code via a long URI in a GET request.

The bug was discovered 01/24/2017. The weakness was disclosed 07/21/2017 as EDB-ID 41153 as not defined exploit (Exploit-DB). The advisory is available at exploit-db.com. This vulnerability was named CVE-2017-11517 since 07/21/2017. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.

After immediately, there has been an exploit disclosed. 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 178 days. During that time the estimated underground price was around $0-$5k.

Proper firewalling of is able to address this issue.

The vulnerability is also documented in the vulnerability database at Exploit-DB (41153). The entry VDB-96252 is pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Geutebrueck

Name

GCore

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.3

VulDB Base Score: 7.3
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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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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MetaSploit ID: geutebrueck_gcore_x64_rce_bo.rb
MetaSploit Name: CA CAM log_security() Stack Buffer Overflow (Win32)
MetaSploit File: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

01/24/2017 🔍
07/21/2017 +178 days 🔍
07/21/2017 +0 days 🔍
07/21/2017 +0 days 🔍
07/21/2017 +0 days 🔍
07/21/2017 +0 days 🔍
07/22/2017 +1 days 🔍
11/25/2019 +856 days 🔍