Bug 137881

Summary: CAN-2004-1002 Integer underflow in ppp
Product: [Fedora] Fedora Reporter: Josh Bressers <bressers>
Component: pppAssignee: Thomas Woerner <twoerner>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: 2Keywords: Security
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Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2004-11-03 10:01:45 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Josh Bressers 2004-11-02 15:11:39 UTC
Improper verification of header fields lets an attacker make the pppd
server access memory it isn't allowed to, and crash the server.  There
is no possibility of code execution, as there is no data being copied,
just a pointer dereferenced.

More information here.
       
http://www.securityfocus.com/archive/1/379450/2004-10-23/2004-10-29/0

This should also affect FC3

Comment 1 Thomas Woerner 2004-11-03 10:01:45 UTC
Fixed in updates in rpm ppp-2.4.2-5.2.FC2.

Comment 2 Mark J. Cox 2004-11-03 12:46:47 UTC
This issue is only a DoS on the connection the attacker is using.