Stream.c denial of service
| stream-dos (4485) |  Medium Risk |
Description:
The stream.c attack is a denial of service attack designed to crash a vulnerable system by sending a flood of spoofed TCP packets with the ACK flag set to random destination ports on the host. This can cause certain versions of FreeBSD and possibly other systems to kernel panic and crash. This attack is also used in the mstream distributed denial of service tool.
Platforms Affected:
- Various vendors, Any application
Remedy:
Upgrade to the latest version of FreeBSD (4.3 or later). Other systems are not at much risk unless this attack is part of a distributed denial of service (DDoS) attack, such as mstream. See References.
Consequences:
Denial of Service
References:
- BugTraq Mailing List, Fri Jan 21 2000 - 11:25:26 CST, explanation and code for stream.c issues at http://archives.neohapsis.com/archives/bugtraq/2000-01/0283.html.
- BugTraq Mailing List, Thu Jan 20 2000 - 21:01:33 CST, Quick remedy for stream.c at http://archives.neohapsis.com/archives/bugtraq/2000-01/0285.html.
- Internet Security Systems Security Alert #48, "mstream" Distributed Denial of Service Tool at http://www.iss.net/xforce/alerts/id/advise48.
Reported:
Jan 01, 2000
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