CVE-2026-48691
FastNetMon Community Edition through 1.2.9 contains an integer overflo ...
Einstufung nach Quelle
Trivys eigenes Label ist CRITICAL. Kritisch laut NVD. Niedriger laut Ubuntu (mittel).
Beschreibung
FastNetMon Community Edition through 1.2.9 contains an integer overflow in the BGP AS_PATH attribute encoder. In src/bgp_protocol.hpp, the IPv4UnicastAnnounce::get_attributes() function computes attribute_length as 'sizeof(bgp_as_path_segment_element_t) + this->as_path_asns.size() * sizeof(uint32_t)' and stores it in a uint8_t field (line 600-605). Since uint8_t can only hold values 0-255, an AS_PATH containing more than 63 ASNs (2 + 64*4 = 258 > 255) causes silent truncation. The truncated length is used for buffer sizing, while the actual data written is the full untruncated amount, resulting in a heap buffer overflow. Similarly, the path_segment_length field at line 621 is also uint8_t, truncating with more than 255 ASNs.
Betroffene Pakete und behobene Versionen
| Quelle | Paket | Behoben in |
|---|---|---|
| debian 12 | fastnetmon | kein Fix angegeben |
| debian 13 | fastnetmon | 1.2.9-0+deb13u1 |
| debian 14 | fastnetmon | 1.2.9-1 |
| echo | fastnetmon | 1.2.9-0+deb13u1 |
| rapidfort debian 12 | fastnetmon | 0:1.2.9-0+deb13u1, 0:1.2.9-1 |
| rapidfort debian 13 | fastnetmon | 0:1.2.9-0+deb13u1, 0:1.2.9-1 |
| rapidfort fedora 43 | fastnetmon | 1.2.9-2.fc43 |
| rapidfort Oracle Linux 10 | fastnetmon | kein Fix angegeben |
| rapidfort Oracle Linux 9 | fastnetmon | kein Fix angegeben |
| rapidfort ubuntu 20.04 | fastnetmon | kein Fix angegeben |
| rapidfort ubuntu 22.04 | fastnetmon | kein Fix angegeben |
| rapidfort ubuntu 24.04 | fastnetmon | kein Fix angegeben |
Alle 14 Einträge aus 14 Quellen zeigen
| Quelle | Paket | Behoben in |
|---|---|---|
| debian 12 | fastnetmon | kein Fix angegeben |
| debian 13 | fastnetmon | 1.2.9-0+deb13u1 |
| debian 14 | fastnetmon | 1.2.9-1 |
| echo | fastnetmon | 1.2.9-0+deb13u1 |
| rapidfort debian 12 | fastnetmon | 0:1.2.9-0+deb13u1, 0:1.2.9-1 |
| rapidfort debian 13 | fastnetmon | 0:1.2.9-0+deb13u1, 0:1.2.9-1 |
| rapidfort fedora 43 | fastnetmon | 1.2.9-2.fc43 |
| rapidfort Oracle Linux 10 | fastnetmon | kein Fix angegeben |
| rapidfort Oracle Linux 9 | fastnetmon | kein Fix angegeben |
| rapidfort ubuntu 20.04 | fastnetmon | kein Fix angegeben |
| rapidfort ubuntu 22.04 | fastnetmon | kein Fix angegeben |
| rapidfort ubuntu 24.04 | fastnetmon | kein Fix angegeben |
| ubuntu 24.04 | fastnetmon | kein Fix angegeben |
| ubuntu 26.04 | fastnetmon | kein Fix angegeben |
Referenzen
- https://github.com/pavel-odintsov/fastnetmon
- https://github.com/pavel-odintsov/fastnetmon/blob/master/src/bgp_protocol.hpp
- https://github.com/pavel-odintsov/fastnetmon/commit/94c66d5b100c42fb8bd10a22ca595e46895d60d0
- https://github.com/pavel-odintsov/fastnetmon/pull/1054
- https://lorikeetsecurity.com/blog/fastnetmon-cve-2026-48691-bgp-as-path-overflow
- https://ubuntu.com/security/notices/USN-8429-1
- https://www.cve.org/CVERecord?id=CVE-2026-48691