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Vulnerability Score 7.5 7.5
CVE Id CVE-1999-1228
Last Modified 05 Sep 2008 04:19:01
Published 27 Sep 1998 12:00:00
Confidentiality Impact PARTIAL PARTIAL
Integrity Impact PARTIAL PARTIAL
Availability Impact PARTIAL PARTIAL
Access Vector NETWORK
Access Complexity LOW
Authentication NONE



Various modems that do not implement a guard time, or are configured with a guard time of 0, can allow remote attackers to execute arbitrary modem commands such as ATH, ATH0, etc., via a "+++" sequence that appears in ICMP packets, the subject of an e-mail message, IRC commands, and others.

Vulnerable Systems


  • Logicode Quicktel 28.8


XF - global-village-modem-dos(3320)

BUGTRAQ - 19980927 1+2=3, +++ATH0=Old school DoS


Last Updated: 27 May 2016 10:35:20