CVE-2020-28634 : Exploit Details and Defense Strategies

CVE-2020-28634, assigned by Talos, involves multiple code execution vulnerabilities in the Nef polygon-parsing functionality of CGAL libcgal CGAL-5.1.1. Attackers can exploit these vulnerabilities through specially crafted files, leading to out-of-bounds reads and type confusion.

Understanding CVE-2020-28634

This CVE identifies critical code execution vulnerabilities in CGAL libcgal CGAL-5.1.1.

What is CVE-2020-28634?

CVE-2020-28634 highlights multiple code execution vulnerabilities in the Nef polygon-parsing functionality of CGAL libcgal CGAL-5.1.1. These vulnerabilities can be triggered by maliciously crafted files.

The Impact of CVE-2020-28634

The vulnerabilities can result in out-of-bounds reads and type confusion, potentially leading to code execution. Attackers exploiting these vulnerabilities can compromise the affected systems.

Technical Details of CVE-2020-28634

This section provides detailed technical insights into the CVE.

Vulnerability Description

The vulnerability involves an out-of-bounds read in Nef_S2/SNC_io_parser.h SNC_io_parser<EW>::read_sedge() seh->next().

Affected Systems and Versions

Vendor: CGAL Project
Product: libcgal
Affected Version: CGAL-5.1.1

Exploitation Mechanism

Attackers can exploit the vulnerabilities by providing specially crafted malformed files to trigger out-of-bounds reads and type confusion.

Mitigation and Prevention

Protecting systems from CVE-2020-28634 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Implement strict input validation to prevent malicious file execution.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Conduct regular security audits and vulnerability assessments.
Educate users on safe browsing habits and the importance of cybersecurity.
Keep systems and software updated with the latest security patches.
Employ network segmentation to contain potential attacks.

Patching and Updates

Regularly check for security advisories from the vendor and apply patches as soon as they are released.