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| GEN:SID | 1:2339 |
| Message | TFTP NULL command attempt |
| Summary | This event is generated when an attempt is made to exploit a known vulnerability in Verilink Netengine Broadband Routers. |
| Impact | Denial of Service (DoS) |
| Detailed Information | TFTP is used to transfer files between hosts. This event is indicative of spurious activity in TFTP traffic from a host to a router. It is possible for an attacker to expoit a DoS condition in Netengine routers. If a UDP packet containing a double-null opcode is sent to the router's TFTP port the router may crash, thus causing the DoS. |
| Affected Systems | Verilink Netengine Broadband Routers |
| Attack Scenarios | An attacker may use a publicly available exploit script to take advantage of the vulnerability. |
| Ease of Attack | Simple. Exploit code exists. |
| Corrective Action | Apply the appropriate vendor supplied patches. Upgrade to the latest non-affected version of the software. |
| Additional References | |
| Rule References | bugtraq: 7575 |
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DID:240447
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