FastNetMon: NetFlow/IPFIX template cache returns unlocked pointers, causing heap-use-after-free on multi-port deployments

Özet

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FastNetMon is a high-performance DDoS detector and sensor. In version 1.2.9 and earlier, peer_find_template() in src/netflow_plugin/netflow_collector.cpp and src/netflow_plugin/netflow_v9_collector.cpp returns a pointer into global_netflow9_templates after releasing the cache mutex. On deployments with at least two entries in netflow_ports, concurrent template redefinition and data-flowset processing can let add_update_peer_template() reassign the template and free its records vector while another listener dereferences the escaped pointer. An unauthenticated sender that can reach both NetFlow/IPFIX listener ports can trigger a heap-use-after-free and reliably crash FastNetMon. No fixed release is available as of this review.

Etkilenen sürümler1 yazılım

Kaynaklar4 kaynak

• CVE.org kaydı
• NVD kaydı
• github.com/…netmon/security/advisories/GHSA-ph88-95vc-x6gv Diğer
• github.com/…ommit/a24e528d145b5371a7ab0bcdde23e4b4b99506e9 Diğer

Kayıt geçmişi

1. 6 Kas 2026 01:31Yayımlandı

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