CVE-2018-1000671 Explained : Impact and Mitigation
Learn about CVE-2018-1000671, a critical security flaw in sympa version 6.2.16 and later, enabling open redirection and reflected XSS attacks. Find mitigation steps and prevention measures here.
CVE-2018-1000671 pertains to a security flaw in version 6.2.16 and later of the software "sympa". The vulnerability involves URL Redirection to Untrusted Site ('Open Redirect') and affects the "referer" parameter of the wwsympa.fcgi login action.
Understanding CVE-2018-1000671
This CVE entry highlights a critical security issue in the sympa software that can lead to open redirection and reflected XSS attacks.
What is CVE-2018-1000671?
The vulnerability in sympa version 6.2.16 and above allows for open redirection and reflected XSS attacks by manipulating the "referer" parameter in the login action.
The Impact of CVE-2018-1000671
This vulnerability can be exploited to conduct open redirection and reflected XSS attacks using data URIs, potentially compromising the security of systems utilizing affected versions of sympa.
Technical Details of CVE-2018-1000671
CVE-2018-1000671 involves the following technical aspects:
Vulnerability Description
The flaw in sympa version 6.2.16 and later enables attackers to perform open redirection and reflected XSS attacks through the "referer" parameter in the wwsympa.fcgi login action.
Affected Systems and Versions
- Product: n/a
- Vendor: n/a
- Versions: Version 6.2.16 and subsequent versions
Exploitation Mechanism
- The vulnerability can be exploited by manipulating the "referer" parameter to execute open redirection and reflected XSS attacks using data URIs.
- Successful attacks require the victim's browser to follow a URL provided by the attacker.
Mitigation and Prevention
To address CVE-2018-1000671, consider the following steps:
Immediate Steps to Take
- Implement input validation to prevent malicious manipulation of the "referer" parameter.
- Monitor and restrict the URLs that the system can redirect to.
Long-Term Security Practices
- Regularly update and patch the sympa software to the latest secure version.
- Educate users on safe browsing practices to minimize the risk of falling victim to open redirection and reflected XSS attacks.
Patching and Updates
As of the latest update, there is no available fix for this vulnerability.