FastNetMon: IPv6 Fragment header dereferenced without bounds check in shared packet parser

Özet

Türkçe özeti henüz hazır değil; şimdilik kaynağın kendi açıklamasını gösteriyoruz.

FastNetMon is a high-performance DDoS detector and sensor. In version 1.2.9 and earlier, parse_raw_packet_to_simple_packet_full() in src/simple_packet_parser_ng.cpp dereferences ipv6_extension_header_fragment_t when IpProtocolNumberIPV6_FRAG is present without first verifying that the eight-byte Fragment header remains. A crafted sFlow v5 RAW_PACKET_HEADER record can remotely reach this shared parser with the Fragment bytes omitted, causing an unauthenticated remote out-of-bounds read. The supplied harness detects the read under AddressSanitizer, but the advisory does not establish a production process crash. 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-jmjw-392h-4g93 Diğer
• github.com/…ommit/1da80df73620c6d0aa4462e9611e65047529b12a Diğer

Kayıt geçmişi

1. 6 Kas 2026 01:32Yayımlandı

İlgili açıklar

• 8,2 CVE-2026-92698FastNetMon: sFlow header_size field trusted as parser capture length causes remote out-of-bounds read
• 7,5 CVE-2026-92697FastNetMon: NetFlow v9 unbounded strlen() on interface-description field causes remote out-of-bounds read
• 7,5 CVE-2026-93424FastNetMon: NetFlow/IPFIX template cache returns unlocked pointers, causing heap-use-after-free on multi-port deployments
• 8,2 CVE-2026-92695FastNetMon: Legacy pcap parse_packet() has no bounds checking, causing out-of-bounds read on truncated frames
• 5,9 CVE-2026-92694FastNetMon: IPv6 host counters map iterated without lock, racing concurrent inserts
• 7,5 CVE-2026-116782FreeSWITCH: Pre-authentication invalid pointer dereference in mod_rtmp connect command handling