CVE-2021-46102 : Vulnerability Insights and Analysis

CVE-2021-46102 pertains to an integer overflow bug in Solana rBPF versions 0.2.14 to 0.2.16, specifically within the 'relocate' function in the file src/elf.rs.

Understanding CVE-2021-46102

This CVE relates to a critical vulnerability in Solana rBPF from versions 0.2.14 to 0.2.16 that could lead to an integer overflow under certain conditions.

What is CVE-2021-46102?

The vulnerability stems from an unchecked sym.st_value in the ELF file, triggering an integer overflow during variable 'addr' calculation.

The Impact of CVE-2021-46102

The integer overflow bug may be exploited by malicious actors to execute arbitrary code or cause a denial of service (DoS) attack on affected systems.

Technical Details of CVE-2021-46102

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The bug in the 'relocate' function in src/elf.rs can lead to an integer overflow due to an unchecked sym.st_value from the ELF file.

Affected Systems and Versions

Product: Solana rBPF
Versions: 0.2.14 to 0.2.16

Exploitation Mechanism

The bug triggers an integer overflow when calculating the 'addr' variable, potentially enabling attackers to exploit the vulnerability.

Mitigation and Prevention

Protecting systems from CVE-2021-46102 is crucial to prevent potential security breaches.

Immediate Steps to Take

Update Solana rBPF to a secure version that addresses the integer overflow bug.
Monitor system logs for any suspicious activities that may indicate exploitation attempts.

Long-Term Security Practices

Conduct regular security audits and code reviews to identify and mitigate vulnerabilities promptly.
Implement least privilege access control to limit the impact of potential security breaches.

Patching and Updates

Apply security patches and updates provided by Solana rBPF to ensure the integrity and security of the system.