Executive brief
Livingston Portmaster network access servers are vulnerable to a remote denial-of-service attack. An attacker can issue a specific sequence of commands to force the device to reboot. This results in a loss of connectivity for all users and services relying on the affected hardware.
Technical details
The vulnerability exists in the command processing logic of Livingston Portmaster devices. By sending a specific, unauthenticated sequence of commands over the network, an attacker can trigger a system reboot. This is a classic denial-of-service (DoS) vulnerability affecting the availability of the device. The issue was first identified in 1995 and is documented under CVE-1999-0218. No specific patch details are provided in the legacy advisory, though modern network security practices typically involve restricting administrative command access to trusted networks.
Affected products
- Livingston Portmaster
Timeline
- 1995-10-01: disclosed: Initial publication date reported by NVD