CVE-2022-37035 : What You Need to Know

An issue was discovered in bgpd in FRRouting (FRR) 8.3 that could lead to Remote Code Execution or Information Disclosure.

Understanding CVE-2022-37035

This CVE highlights a use-after-free vulnerability in bgpd in FRRouting (FRR) 8.3, potentially enabling Remote Code Execution or Information Disclosure.

What is CVE-2022-37035?

CVE-2022-37035 is a vulnerability in FRRouting (FRR) 8.3 that could be exploited through crafted BGP packets, leading to Remote Code Execution or Information Disclosure without requiring user interaction.

The Impact of CVE-2022-37035

The impact of this CVE is severe, as threat actors could potentially gain unauthorized access or extract sensitive information by exploiting this vulnerability.

Technical Details of CVE-2022-37035

This section delves deeper into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability resides in bgpd in FRRouting (FRR) 8.3, specifically in functions like bgp_notify_send_with_data() and bgp_process_packet() in bgp_packet.c, where a use-after-free condition occurs due to a race condition.

Affected Systems and Versions

FRRouting (FRR) 8.3 is known to be affected by this vulnerability.

Exploitation Mechanism

Exploitation of CVE-2022-37035 involves sending carefully crafted BGP packets to trigger the use-after-free condition, potentially leading to Remote Code Execution or Information Disclosure.

Mitigation and Prevention

To safeguard systems from CVE-2022-37035, the following measures are recommended.

Immediate Steps to Take

Organizations are advised to patch their FRRouting (FRR) 8.3 installations promptly.
Network administrators should monitor for any unusual BGP packet activity.

Long-Term Security Practices

Regularly update and patch all software components to mitigate known vulnerabilities.
Conduct security audits and penetration testing to identify and address potential weaknesses.

Patching and Updates

Stay informed about security updates for FRRouting (FRR) 8.3 and apply patches as soon as they are released.