CVE-2023-3748

low-risk

Published 2023-07-24

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.

Do I need to act?

0.07% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 3.5/10 Low

ADJACENT_NETWORK / LOW complexity

Affected Products (1)

Frrouting

Affected Vendors

Frrouting

References (4)

Third Party Advisory https://access.redhat.com/security/cve/CVE-2023-3748

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2223668

Third Party Advisory https://access.redhat.com/security/cve/CVE-2023-3748

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2223668

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low-risk

Severity 13/34 · Low

Exploitability 0/34 · Minimal

Exposure 5/34 · Minimal