Search
Search Results (24 CVEs found)
| CVE | Vendors | Products | Updated | CVSS v3.1 |
|---|---|---|---|---|
| CVE-2026-48683 | 1 Pavel-odintsov | 1 Fastnetmon | 2026-05-27 | 6.5 Medium |
| FastNetMon Community Edition through 1.2.9 contains an out-of-bounds read vulnerability in the NetFlow v9 data flowset processor. In src/netflow_plugin/netflow_v9_collector.cpp, the Data template branch (lines 1695-1702) iterates over flow records without performing a per-iteration bounds check against the packet end pointer. In contrast, the Options template branch (lines 1709-1719) correctly checks 'if (pkt + offset + field_template->total_length > packet_end)' before each iteration. The Data branch omits this check entirely. Since template definitions are sent by the network peer (and are unauthenticated UDP), an attacker can craft templates that cause the parser to read arbitrary memory past the packet buffer. This can leak sensitive memory contents or cause a crash. | ||||
| CVE-2026-48689 | 1 Pavel-odintsov | 1 Fastnetmon | 2026-05-27 | 9.8 Critical |
| FastNetMon Community Edition through 1.2.9 contains an off-by-one heap-based buffer overflow in the dynamic_binary_buffer_t class (src/dynamic_binary_buffer.hpp). Five methods (append_dynamic_buffer, append_data_as_pointer, append_data_as_object_ptr, memcpy_from_ptr, memcpy_from_object_ptr) use an incorrect bounds check of the form 'if (offset + length > maximum_internal_storage_size + 1)' instead of the correct 'if (offset + length > maximum_internal_storage_size)'. This allows writing exactly one byte past the end of the heap-allocated buffer. The class is used pervasively in BGP message encoding/decoding, NetFlow template processing, and Flow Spec NLRI construction. An attacker who can send network traffic (NetFlow, sFlow, IPFIX, or BGP) to a FastNetMon instance can trigger this overflow, potentially achieving arbitrary code execution by corrupting heap metadata. Notably, the append_byte() method uses the correct bounds check, confirming the inconsistency. | ||||
| CVE-2024-56072 | 1 Pavel-odintsov | 1 Fastnetmon | 2025-06-20 | 7.5 High |
| An issue was discovered in FastNetMon Community Edition through 1.2.7. The sFlow v5 plugin allows remote attackers to cause a denial of service (application crash) via a crafted packet that specifies many sFlow samples. | ||||
| CVE-2024-56073 | 1 Pavel-odintsov | 1 Fastnetmon | 2025-06-20 | 7.5 High |
| An issue was discovered in FastNetMon Community Edition through 1.2.7. Zero-length templates for Netflow v9 allow remote attackers to cause a denial of service (divide-by-zero error and application crash). | ||||