CVE-2020-12403 : Security Advisory and Response
Learn about CVE-2020-12403, a flaw in CHACHA20-POLY1305 implementation in NSS versions before 3.55, impacting confidentiality and system availability. Find mitigation steps and affected versions here.
A flaw in the CHACHA20-POLY1305 implementation in NSS versions before 3.55 could lead to out-of-bounds reads, impacting confidentiality and system availability.
Understanding CVE-2020-12403
What is CVE-2020-12403?
This CVE identifies a vulnerability in the way CHACHA20-POLY1305 was implemented in NSS before version 3.55, potentially causing out-of-bounds reads.
The Impact of CVE-2020-12403
The primary threat posed by this vulnerability is to confidentiality and system availability.
Technical Details of CVE-2020-12403
Vulnerability Description
The flaw in the CHACHA20-POLY1305 implementation in NSS versions before 3.55 could result in out-of-bounds reads.
Affected Systems and Versions
- Vendor: n/a
- Product: NSS
- Affected Version: NSS 3.55
Exploitation Mechanism
The vulnerability could be exploited by utilizing multi-part Chacha20, leading to out-of-bounds reads.
Mitigation and Prevention
Immediate Steps to Take
- Update NSS to version 3.55 or later
- Monitor vendor security advisories for patches
Long-Term Security Practices
- Regularly update software and libraries
- Implement network segmentation and access controls
Patching and Updates
Apply patches provided by NSS to address the vulnerability.