CVE-2018-20198 : Security Advisory and Response
Learn about CVE-2018-20198, a vulnerability in FAAD2 2.8.8 causing a denial of service due to mishandling in the LONG_START_SEQUENCE case. Find mitigation steps and patching details here.
A vulnerability in Freeware Advanced Audio Decoder 2 (FAAD2) version 2.8.8 was identified, leading to a denial of service condition due to mishandling of adding to windowed output in the LONG_START_SEQUENCE case.
Understanding CVE-2018-20198
What is CVE-2018-20198?
A NULL pointer dereference in ifilter_bank of libfaad/filtbank.c in FAAD2 2.8.8 causes a segmentation fault and application crash, resulting in denial of service.
The Impact of CVE-2018-20198
The vulnerability leads to a denial of service condition due to mishandling of adding to windowed output in the LONG_START_SEQUENCE case.
Technical Details of CVE-2018-20198
Vulnerability Description
The vulnerability in FAAD2 version 2.8.8 results in a segmentation fault and application crash due to mishandling in the LONG_START_SEQUENCE case.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: 2.8.8
Exploitation Mechanism
The issue occurs in the ifilter_bank function in the filtbank.c file of the library, leading to a denial of service condition.
Mitigation and Prevention
Immediate Steps to Take
- Apply the security update provided by the vendor
- Monitor vendor advisories for any further updates
Long-Term Security Practices
- Regularly update software and libraries
- Conduct security assessments and audits periodically
Patching and Updates
Ensure to apply the security update released by FAAD2 to address the vulnerability.