CVE-2017-7672 : Vulnerability Insights and Analysis
Learn about CVE-2017-7672, a DoS vulnerability in Apache Struts allowing attackers to overload servers by manipulating URLs. Find mitigation steps and long-term security practices here.
CVE-2017-7672, published on July 13, 2017, addresses a vulnerability in Apache Struts that could lead to a Denial of Service (DoS) attack. By allowing the entry of a specific URL in a form field, an attacker could overwhelm the server during the URL validation process.
Understanding CVE-2017-7672
This CVE entry pertains to a DoS vulnerability in Apache Struts.
What is CVE-2017-7672?
The vulnerability in Apache Struts allows attackers to create a URL that can overload the server during the URL validation process, potentially leading to a DoS attack.
The Impact of CVE-2017-7672
Exploiting this vulnerability could result in a DoS condition, causing service unavailability and disruption.
Technical Details of CVE-2017-7672
This section provides technical insights into the CVE-2017-7672 vulnerability.
Vulnerability Description
The issue arises when an application permits the entry of a URL in a form field and uses the integrated URLValidator, enabling the creation of a malicious URL to overwhelm the server during validation.
Affected Systems and Versions
- Product: Apache Struts
- Vendor: Apache Software Foundation
- Versions Affected: 2.5 to 2.5.10.1
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting a specific URL that triggers server overload during the URL validation process.
Mitigation and Prevention
Protecting systems from CVE-2017-7672 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Upgrade to Apache Struts version 2.5.12 to mitigate the vulnerability.
Long-Term Security Practices
- Implement input validation mechanisms to prevent malicious URL entries.
- Regularly monitor and update security patches to address emerging threats.
- Conduct security assessments to identify and remediate vulnerabilities promptly.
- Educate users on safe browsing practices to minimize the risk of exploitation.
- Employ network and application firewalls to filter and block malicious traffic.
Patching and Updates
Ensure timely application of security patches and updates to address known vulnerabilities and enhance system security.