CVE-2019-11712 : Vulnerability Insights and Analysis
Learn about CVE-2019-11712 impacting Firefox ESR, Firefox, and Thunderbird versions, allowing attackers to perform Cross-Site Request Forgery (CSRF) attacks. Find mitigation steps and necessary updates here.
A vulnerability affecting Firefox ESR, Firefox, and Thunderbird versions that could lead to Cross-Site Request Forgery (CSRF) attacks.
Understanding CVE-2019-11712
This CVE involves NPAPI plugins like Flash, allowing attackers to exploit CORS bypass vulnerabilities.
What is CVE-2019-11712?
The vulnerability impacts certain versions of NPAPI plugins, like Flash, that make POST requests and receive a status 308 redirect response. By bypassing CORS requirements, attackers can exploit this weakness and carry out Cross-Site Request Forgery (CSRF) attacks. This issue affects Firefox ESR versions prior to 60.8, Firefox versions prior to 68, and Thunderbird versions prior to 60.8.
The Impact of CVE-2019-11712
The vulnerability could enable attackers to perform CSRF attacks by manipulating POST requests made by NPAPI plugins.
Technical Details of CVE-2019-11712
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
POST requests made by NPAPI plugins, such as Flash, that receive a status 308 redirect response can bypass CORS requirements. This can allow an attacker to perform Cross-Site Request Forgery (CSRF) attacks. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.
Affected Systems and Versions
- Firefox ESR versions prior to 60.8
- Firefox versions prior to 68
- Thunderbird versions prior to 60.8
Exploitation Mechanism
Attackers can exploit this vulnerability by manipulating NPAPI plugins to make POST requests and receive specific redirect responses.
Mitigation and Prevention
Protective measures and steps to mitigate the risks associated with CVE-2019-11712.
Immediate Steps to Take
- Update affected software to versions 60.8 for Firefox ESR, 68 for Firefox, and 60.8 for Thunderbird.
- Disable NPAPI plugins if not essential for operations.
Long-Term Security Practices
- Regularly monitor security advisories from Mozilla and other relevant sources.
- Implement strict CORS policies and security configurations to prevent CSRF attacks.
Patching and Updates
- Apply security patches provided by Mozilla promptly to address the vulnerability and enhance system security.