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CVE-2023-38406

Frrouting vulnerability

9.8 CRITICALEPSS 0.94%
  1. Published6 Nov 2023

Description

bgpd/bgp_flowspec.c in FRRouting (FRR) before 8.4.3 mishandles an nlri length of zero, aka a "flowspec overflow."

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Frrouting< 8.4.3

Remediation

Fixed in
Frrouting≥ 8.4.3

References

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Frequently asked

Is CVE-2023-38406 being actively exploited?

CVE-2023-38406 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.94%.

How severe is CVE-2023-38406?

CVE-2023-38406 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.94% probability of exploitation.

Which products are affected by CVE-2023-38406?

Affected products include Frrouting.

How do I fix CVE-2023-38406?

Upgrade affected software to a fixed version, for example Frrouting 8.4.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-38406 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.