CVE-2019-11938 : Security Advisory and Response
Learn about CVE-2019-11938 affecting Facebook Thrift in Java versions prior to v2019.12.09.00, allowing denial of service attacks by exploiting inadequate error handling for large containers in message payloads.
Facebook Thrift in Java versions prior to v2019.12.09.00 is susceptible to a denial of service vulnerability due to inadequate error handling for excessively large containers in message payloads.
Understanding CVE-2019-11938
This CVE highlights a vulnerability in Facebook Thrift that could be exploited by malicious clients to trigger denial of service attacks.
What is CVE-2019-11938?
The vulnerability in Facebook Thrift allows malicious clients to send shorter messages that trigger excessive memory allocation, potentially leading to denial of service. It affects versions released before v2019.12.09.00.
The Impact of CVE-2019-11938
The vulnerability could result in denial of service attacks by exploiting the lack of error handling for excessively large containers in message payloads.
Technical Details of CVE-2019-11938
Facebook Thrift vulnerability details and affected systems.
Vulnerability Description
The issue arises from the lack of error handling for messages with excessively large containers, enabling malicious clients to cause denial of service by triggering excessive memory allocation.
Affected Systems and Versions
- Product: Facebook Thrift
- Vendor: Facebook
- Affected Versions: Versions released before v2019.12.09.00
Exploitation Mechanism
Malicious clients can exploit the vulnerability by sending shorter messages that trigger excessive memory allocation, potentially leading to denial of service.
Mitigation and Prevention
Steps to mitigate and prevent exploitation of CVE-2019-11938.
Immediate Steps to Take
- Update to version v2019.12.09.00 or later to mitigate the vulnerability.
- Implement network-level protections to detect and block malicious traffic.
Long-Term Security Practices
- Regularly update software and apply patches to address known vulnerabilities.
- Conduct security assessments and audits to identify and remediate potential weaknesses.
Patching and Updates
- Apply patches provided by Facebook for Facebook Thrift to address the vulnerability.