NISCC has issued an advisory: http://www.uniras.gov.uk/vuls/2004/236929/index.htm
SANS has some good info too: http://isc.sans.org/diary.php?date=2004-04-20 Mark -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Crist J. Clark Sent: Tuesday, April 20, 2004 12:28 PM To: [EMAIL PROTECTED] Subject: [Full-Disclosure] Core Internet Vulnerable - News at 11:00 Does anyone know WTF they are trying to say in this AP article, "Core Internet Technology Is Vulnerable," http://story.news.yahoo.com/news?tmpl=story&cid=562&ncid=738&e=1&u=/ap/20040 420/ap_on_hi_te/internet_threat It sounds like they are talking about a sequence number guessing attack on TCP BGP sessions? Sequence number prediction isn't really a new attack, but the story says, "Experts previously maintained such attacks could take between four years and 142 years to succeed because they require guessing a rotating number from roughly 4 billion possible combinations. Watson said he can guess the proper number with as few as four attempts, which can be accomplished within seconds." Hmmm... Four attempts... And the story makes it sound like a cross-platform attack, not a bug in a particular OS's ISN generation. FUD or is there something here? -- Crist J. Clark | [EMAIL PROTECTED] | [EMAIL PROTECTED] http://people.freebsd.org/~cjc/ | [EMAIL PROTECTED] _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
