CVE-2020-13759 : Exploit Details and Defense Strategies

Rust-VMM vm-memory before 0.1.1 and 0.2.x before 0.2.1 allows attackers to cause a denial of service due to memory access vulnerabilities.

Understanding CVE-2020-13759

This CVE involves vulnerabilities in Rust-VMM vm-memory that can lead to a denial of service, impacting IP networking.

What is CVE-2020-13759?

The CVE-2020-13759 vulnerability in Rust-VMM vm-memory versions before 0.1.1 and 0.2.1 allows attackers to disrupt IP networking by exploiting memory access issues in read_obj and write_obj functions.

The Impact of CVE-2020-13759

The vulnerability can result in a denial of service, causing a loss of IP networking connectivity on affected systems, specifically aarch64 and x86_64 architectures with musl or glibc.

Technical Details of CVE-2020-13759

This section provides technical insights into the vulnerability.

Vulnerability Description

The issue arises from improper memory access in the read_obj and write_obj functions within Rust-VMM vm-memory, enabling attackers to trigger a denial of service.

Affected Systems and Versions

Rust-VMM vm-memory versions before 0.1.1 and 0.2.1
Systems running aarch64 (with musl or glibc) and x86_64 (with musl)

Exploitation Mechanism

Attackers exploit the memory access vulnerabilities in read_obj and write_obj functions to disrupt IP networking, leading to a denial of service.

Mitigation and Prevention

Protecting systems from CVE-2020-13759 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Rust-VMM vm-memory to version 0.1.1 or 0.2.1, where the vulnerability is patched.
Monitor network activity for any signs of disruption.

Long-Term Security Practices

Regularly update software components to address known vulnerabilities.
Implement network segmentation to contain potential attacks.

Patching and Updates

Apply patches provided by Rust-VMM vm-memory promptly to mitigate the vulnerability and prevent potential denial of service attacks.