Vulnerabilities > CVE-2017-11517 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Geutebrueck Gcore 1.3.8.42/1.4.2.37

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
network
low complexity
geutebrueck
CWE-119
exploit available
metasploit

Summary

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.

Vulnerable Configurations

Part Description Count
Application
Geutebrueck
2

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Exploit-Db

idEDB-ID:41153

Metasploit

descriptionThis module exploits a stack Buffer Overflow in the GCore server (GCoreServer.exe). The vulnerable webserver is running on Port 13003 and Port 13004, does not require authentication and affects all versions from 2003 till July 2016 (Version 1.4.YYYYY).
idMSF:EXPLOIT/WINDOWS/HTTP/GEUTEBRUECK_GCORE_X64_RCE_BO
last seen2020-06-13
modified2019-08-15
published2017-02-14
references
reporterRapid7
sourcehttps://github.com/rapid7/metasploit-framework/blob/master//modules/exploits/windows/http/geutebrueck_gcore_x64_rce_bo.rb
titleGeutebrueck GCore - GCoreServer.exe Buffer Overflow RCE

Packetstorm

data sourcehttps://packetstormsecurity.com/files/download/144928/geutebrueck_gcore_x64_rce_bo.rb.txt
idPACKETSTORM:144928
last seen2017-11-09
published2017-11-08
reporterLuca Cappiello
sourcehttps://packetstormsecurity.com/files/144928/Geutebrueck-GCore-GCoreServer.exe-Buffer-Overflow.html
titleGeutebrueck GCore GCoreServer.exe Buffer Overflow