Is CVE-2017-3224 actively exploited?

No active exploitation of CVE-2017-3224 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2017-3224 be exploited remotely?

Partially. CVE-2017-3224 requires adjacent network access (same network segment) to exploit.

What is the CVSS score of CVE-2017-3224?

CVE-2017-3224 has a CVSS score of 8.2 (HIGH).

HOME VULNERABILITIESCVE-2017-3224

HIGH

CVE-2017-3224

CWE-354Published: July 24, 2018· Updated: Jun 17, 2026

8.2

CVSS v3.1

Official Description

Open Shortest Path First (OSPF) protocol implementations may improperly determine Link State Advertisement (LSA) recency for LSAs with MaxSequenceNumber. According to RFC 2328 section 13.1, for two instances of the same LSA, recency is determined by first comparing sequence numbers, then checksums, and finally MaxAge. In a case where the sequence numbers are the same, the LSA with the larger checksum is considered more recent, and will not be flushed from the Link State Database (LSDB). Since the RFC does not explicitly state that the values of links carried by a LSA must be the same when prematurely aging a self-originating LSA with MaxSequenceNumber, it is possible in vulnerable OSPF implementations for an attacker to craft a LSA with MaxSequenceNumber and invalid links that will result in a larger checksum and thus a 'newer' LSA that will not be flushed from the LSDB. Propagation of the crafted LSA can result in the erasure or alteration of the routing tables of routers within the routing domain, creating a denial of service condition or the re-routing of traffic on the network. CVE-2017-3224 has been reserved for Quagga and downstream implementations (SUSE, openSUSE, and Red Hat packages).

NVD Source

Technical Analysis

CVE-2017-3224 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.2.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.