CVE-2023-31490 : What You Need to Know

An issue found in Frrouting bgpd v.8.4.2 allows a remote attacker to cause a denial of service via the bgp_attr_psid_sub() function.

Understanding CVE-2023-31490

This CVE refers to a vulnerability discovered in Frrouting bgpd v.8.4.2 that could be exploited by a remote attacker to trigger a denial of service attack.

What is CVE-2023-31490?

CVE-2023-31490 is a security flaw in the bgpd component of Frrouting v.8.4.2. It enables an attacker to disrupt services by exploiting the bgp_attr_psid_sub() function.

The Impact of CVE-2023-31490

This vulnerability poses a risk of denial of service, potentially impacting the availability and reliability of Frrouting bgpd v.8.4.2.

Technical Details of CVE-2023-31490

The technical details involve a flaw in the bgp_attr_psid_sub() function that permits attackers to exploit the vulnerability.

Vulnerability Description

The vulnerability in Frrouting bgpd v.8.4.2 allows remote attackers to disrupt service availability through a denial of service attack.

Affected Systems and Versions

It affects Frrouting bgpd v.8.4.2 as specified in the vendor's advisory.

Exploitation Mechanism

Exploitation of this vulnerability involves triggering the bgp_attr_psid_sub() function to cause a denial of service.

Mitigation and Prevention

To address CVE-2023-31490, immediate steps must be taken to mitigate the risk and prevent potential exploitation.

Immediate Steps to Take

Update Frrouting bgpd to a patched version that addresses the vulnerability.
Monitor network traffic for any suspicious activity that could indicate an ongoing attack.

Long-Term Security Practices

Regularly apply security updates and patches to all software components to prevent known vulnerabilities.
Implement network segmentation and access control measures to limit the attack surface.

Patching and Updates

Refer to vendor advisories provided by Frrouting and relevant organizations for specific patches and updates.