CVE-2018-20194 : Exploit Details and Defense Strategies
Discover the stack-based buffer underflow vulnerability in Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.8, leading to denial of service or other impacts. Learn how to mitigate and prevent CVE-2018-20194.
A vulnerability has been discovered in the Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.8, leading to a stack-based buffer underflow issue.
Understanding CVE-2018-20194
This CVE involves a specific vulnerability in the calculate_gain function of FAAD2, potentially resulting in denial of service or other impacts.
What is CVE-2018-20194?
The vulnerability in the libfaad/sbr_hfadj.c file of FAAD2 2.8.8 allows for a stack-based buffer underflow when handling noise energy levels, triggered by a crafted input.
The Impact of CVE-2018-20194
The mishandling of noise energy levels in FAAD2 can lead to a denial of service or other unspecified impacts, posing a risk to systems utilizing the affected versions.
Technical Details of CVE-2018-20194
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
The vulnerability arises from the third occurrence of the calculate_gain function in FAAD2, where a stack-based buffer underflow occurs due to the mishandling of noise energy levels.
Affected Systems and Versions
- Product: Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.8
- Vendor: N/A
- Versions: N/A
Exploitation Mechanism
The vulnerability can be exploited by providing a specifically crafted input that triggers the stack-based buffer underflow in the calculate_gain function of FAAD2.
Mitigation and Prevention
Protecting systems from CVE-2018-20194 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security updates and patches provided by the vendor promptly.
- Monitor security advisories for any new information or patches related to this vulnerability.
Long-Term Security Practices
- Implement robust input validation mechanisms to prevent crafted inputs from triggering vulnerabilities.
- Conduct regular security assessments and audits to identify and address potential weaknesses in the system.
Patching and Updates
Regularly check for updates and patches from the vendor to address the CVE-2018-20194 vulnerability.