Learn about CVE-2017-7907 affecting Schneider Electric Wonderware Historian Client 2014 R2 SP1 and earlier versions. Find out how attackers could exploit an XML parsing issue to cause denial of service or unauthorized data disclosure.
Schneider Electric Wonderware Historian Client 2014 R2 SP1 and earlier versions are affected by an XML parsing configuration issue that could lead to a denial of service or unauthorized disclosure of file contents.
Understanding CVE-2017-7907
This CVE involves a vulnerability in Schneider Electric Wonderware Historian Client related to XML parsing.
What is CVE-2017-7907?
The vulnerability in Schneider Electric Wonderware Historian Client arises from a poorly limited XML parser lacking proper restrictions for XML external entity reference (XXE). This flaw could be exploited by attackers to input malicious data through the application, potentially resulting in a denial of service or unauthorized disclosure of server or network file contents.
The Impact of CVE-2017-7907
The vulnerability could allow attackers to disrupt services or access sensitive information, posing a risk to the confidentiality and availability of systems.
Technical Details of CVE-2017-7907
Schneider Electric Wonderware Historian Client is susceptible to exploitation due to an improper XML parser configuration.
Vulnerability Description
The issue involves an improperly restricted XML parser that lacks proper restrictions for XML external entity reference (XXE), enabling attackers to input malicious data.
Affected Systems and Versions
Exploitation Mechanism
Attackers can exploit the vulnerability by injecting malicious data through the application, potentially leading to denial of service or unauthorized disclosure of file contents.
Mitigation and Prevention
To address CVE-2017-7907, follow these steps:
Immediate Steps to Take
Long-Term Security Practices
Patching and Updates