CVE-2023-3748: frrouting Infinite Loop

Vulnerability summary

CVE-2023-3748 is a high (CVSS 7.5) Infinite Loop vulnerability in frrouting. EPSS estimates a 0.78% chance of exploitation in the next 30 days, higher than 55.1% of scored vulnerabilities.

Timeline

1. 24-07-2023
   PublishedVulnerability first disclosed.
2. 27-09-2024
   Last modifiedVulnerability information updated.

Description

A flaw was found in FRRouting when parsing certain babeld unicast hello messages that are intended to be ignored. This issue may allow an attacker to 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 enter an infinite loop and cause a denial of service.

• CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.