Infinite loop in frr - CVE-2023-3748

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Main Vulnerability Database Vulnerabilities #VU78619

Infinite loop in frr - CVE-2023-3748

Published: July 24, 2023


Vulnerability identifier: #VU78619
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2023-3748
CWE-ID: CWE-835
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
frr
Software vendor:
frrouting.org

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop when processing hello messages. A remote attacker can send specially crafted hello messages with the unicast flag set, the interval field set to 0, or any TLV that contains a sub-TLV with the Mandatory flag set to consume all available system resources and cause denial of service conditions.


Remediation

Install updates from vendor's website.

External links