CVE-2023-41359 : Exploit Details and Defense Strategies

An out-of-bounds read vulnerability was found in FRRouting FRR through version 9.0. This vulnerability exists in the bgpd/bgp_attr.c file due to the lack of a check for the availability of two bytes during AIGP validation.

Understanding CVE-2023-41359

This section provides an overview of the CVE-2023-41359 vulnerability.

What is CVE-2023-41359?

CVE-2023-41359 is an out-of-bounds read vulnerability in FRRouting FRR through version 9.0. It stems from a missing check in the bgpd/bgp_attr.c file.

The Impact of CVE-2023-41359

If exploited, this vulnerability could allow an attacker to read memory out of its bounds, potentially leading to information disclosure or Denial of Service (DoS) attacks.

Technical Details of CVE-2023-41359

In this section, we delve into the technical aspects of CVE-2023-41359.

Vulnerability Description

The vulnerability arises from an out-of-bounds read in bgp_attr_aigp_valid in the bgpd/bgp_attr.c file of FRRouting.

Affected Systems and Versions

All versions of FRRouting FRR up to version 9.0 are affected by this vulnerability.

Exploitation Mechanism

Exploiting this vulnerability requires sending specially crafted input to trigger the out-of-bounds read in the bgpd/bgp_attr.c file.

Mitigation and Prevention

To address CVE-2023-41359, consider the following mitigation strategies.

Immediate Steps to Take

Apply the patches provided by the vendor promptly.

Long-Term Security Practices

Regularly update FRRouting FRR to the latest version to mitigate known vulnerabilities.

Patching and Updates

Stay informed about security advisories from FRRouting and promptly apply any patches or updates to address vulnerabilities.