CVE-2020-11044 : Exploit Details and Defense Strategies
Learn about CVE-2020-11044, a double free vulnerability in FreeRDP versions > 1.2, < 2.0.0. Understand the impact, affected systems, exploitation, and mitigation steps.
CVE-2020-11044, also known as Double Free in FreeRDP, is a vulnerability in FreeRDP versions greater than 1.2 and before 2.0.0. This CVE was published on May 7, 2020, and has been assigned by GitHub_M.
Understanding CVE-2020-11044
In FreeRDP versions greater than 1.2 and before 2.0.0, a double free vulnerability in update_read_cache_bitmap_v3_order can cause a client application to crash when parsing corrupted data from a manipulated server. The issue has been addressed in version 2.0.0.
What is CVE-2020-11044?
The CVE-2020-11044 vulnerability, also known as Double Free in FreeRDP, affects FreeRDP versions greater than 1.2 and before 2.0.0. It involves a double free vulnerability in the update_read_cache_bitmap_v3_order function, leading to a client application crash when processing manipulated server data.
The Impact of CVE-2020-11044
The impact of CVE-2020-11044 includes:
- Crashing of client applications due to a double free vulnerability
- Potential exploitation by attackers sending corrupted data from a manipulated server
Technical Details of CVE-2020-11044
CVE-2020-11044 involves the following technical aspects:
Vulnerability Description
The vulnerability is classified as CWE-415: Double Free, indicating a memory corruption issue where a program frees the same memory address twice.
Affected Systems and Versions
- Vendor: FreeRDP
- Product: FreeRDP
- Affected Versions: > 1.2, < 2.0.0
Exploitation Mechanism
The vulnerability can be exploited by sending corrupted data from a manipulated server, triggering a double free in the update_read_cache_bitmap_v3_order function.
Mitigation and Prevention
To address CVE-2020-11044, consider the following mitigation strategies:
Immediate Steps to Take
- Update FreeRDP to version 2.0.0 or later to apply the patch
- Monitor vendor advisories for any additional guidance
Long-Term Security Practices
- Regularly update software and apply security patches
- Implement network security measures to detect and prevent malicious data
Patching and Updates
- Apply the patch provided in FreeRDP version 2.0.0 to mitigate the vulnerability