Vulnerabilities > CVE-2007-4473 - Buffer Errors vulnerability in Gesytec Easylon OPC Server 2.30.32

047910
CVSS 10.0 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
low complexity
gesytec-easylon
CWE-119
critical
NVD
Published: 2007-12-17
Updated: 2017-07-29

Summary

Gesytec Easylon OPC Server before 2.3.44 does not properly validate server handles, which allows remote attackers to execute arbitrary code or cause a denial of service via unspecified network traffic to the OLE for Process Control (OPC) interface, probably related to free operations on arbitrary memory addresses through certain Remove functions, and read and write operations on arbitrary memory addresses through certain Set, Read, and Write functions.

Vulnerable Configurations

Part Description Count
Application
Gesytec_Easylon
1

Common Weakness Enumeration (CWE)

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.

Seebug

bulletinFamilyexploit
descriptionBUGTRAQ ID: 26876 CVE ID:CVE-2007-4473 CNCVE ID:CNCVE-20074473 OLE for Process Control (OPC)是一款用于进程控制和制造业使用的标准OLE COM对象集规 格。OPC servers是OPC实现的服务程序。 Easylon OPC Server不正确验证服务处理，远程攻击者可以利用漏洞未授权访问服务器OPC 接口。 攻击者可以借此访问Easylon OPC Server执行任意代码或进行拒绝服务攻击，目前没有详细 漏洞细节提供。 Gesytec GmbH Easylon OPC Server 2.30.32 Gesytec GmbH Easylon OPC Server 2.0 厂商解决方案 升级到Easylon OPC Server 2.3.44版本： <a href=http://www.gesytec.de/ target=_blank>http://www.gesytec.de/</a>
idSSV:2621
last seen2017-11-19
modified2007-12-18
published2007-12-18
reporterRoot
titleEasylon OPC Server任意代码执行漏洞

References