Bug 5538

Summary: Kernel 2.2.x ISN vulnerability
Product: [Retired] Red Hat Linux Reporter: zurk
Component: kernelAssignee: Cristian Gafton <gafton>
Status: CLOSED CURRENTRELEASE QA Contact:
Severity: medium Docs Contact:
Priority: high    
Version: 6.0Keywords: Security
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
URL: http://www.geocrawler.com/mail/msg.php3?msg_id=2681806&list=35
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 1999-10-05 14:20:47 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description zurk 1999-10-04 23:30:13 UTC
Thought this would have been fixed by now..oh well...Here
goes (hope the formatting doesnt kill it) :
A weakness within the TCP stack in Linux 2.2.x kernels has
been
                discovered. The vulnerability makes it
possible to "blind-spoof" TCP
                connections.
                It`s therefore possible for an attacker to
initiate a TCP connection
                from an arbitrary non existing or
unresponding IP source address,
                exploiting IP address based access control
mechanisms.

                Linux 2.0.x kernels were tested against this
attack and found not to
                be vulnerable in any case.




The vulnerability :
http://www.geocrawler.com/mail/msg.php3?msg_id=2681806&list=35
The patches (1st fixes typo, 2nd fixes vulnerability):
http://www.geocrawler.com/mail/msg.php3?msg_id=2681922&list=35
http://www.geocrawler.com/mail/msg.php3?msg_id=2682323&list=35

Check 6.1 for it too...Also can we now have doom in X Games
? Dooms source is now GPLed.

Comment 1 Bill Nottingham 1999-10-05 14:20:59 UTC
This is fixed in the latest kernels in 6.1/Raw Hide.

As for Doom, while the source is available, IIRC, Id specfically
said that commercial redistribution was prohibited.