CVE-2018-5380 : What You Need to Know

The Quagga BGP daemon (bgpd) version 1.2.3 and earlier may encounter an issue where the internal BGP code-to-string conversion tables used for debugging purposes can be exceeded by 1 pointer value, depending on the input provided.

Understanding CVE-2018-5380

This CVE involves a vulnerability in the Quagga BGP daemon (bgpd) that could lead to a specific internal table overrun issue.

What is CVE-2018-5380?

The vulnerability in Quagga BGP daemon (bgpd) version 1.2.3 and earlier can result in exceeding internal BGP code-to-string conversion tables by 1 pointer value due to specific input.

The Impact of CVE-2018-5380

The impact of this vulnerability is rated as MEDIUM with a CVSS base score of 4.3. It has a low attack complexity and vector, affecting availability with no impact on confidentiality or integrity.

Technical Details of CVE-2018-5380

This section provides more technical insights into the CVE.

Vulnerability Description

The vulnerability allows for an overrun of internal BGP code-to-string conversion tables by 1 pointer value based on the input, potentially leading to issues.

Affected Systems and Versions

Product: bgpd
Vendor: Quagga
Versions Affected: Custom version 'bpgd' less than 1.2.3

Exploitation Mechanism

The issue arises due to a specific scenario where the input provided to the BGP daemon exceeds the internal conversion table's capacity by 1 pointer value.

Mitigation and Prevention

To address CVE-2018-5380, follow these mitigation strategies:

Immediate Steps to Take

Update Quagga BGP daemon to version 1.2.3 or later.
Monitor vendor advisories for patches and updates.

Long-Term Security Practices

Regularly review and update software versions to mitigate known vulnerabilities.
Implement network segmentation and access controls to limit potential exploitation.

Patching and Updates

Apply patches provided by Quagga promptly to address the vulnerability and enhance system security.