Bug 137881 - CAN-2004-1002 Integer underflow in ppp
CAN-2004-1002 Integer underflow in ppp
Product: Fedora
Classification: Fedora
Component: ppp (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Thomas Woerner
: Security
Depends On:
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Reported: 2004-11-02 10:11 EST by Josh Bressers
Modified: 2007-11-30 17:10 EST (History)
0 users

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2004-11-03 05:01:45 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Josh Bressers 2004-11-02 10:11:39 EST
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.

This should also affect FC3
Comment 1 Thomas Woerner 2004-11-03 05:01:45 EST
Fixed in updates in rpm ppp-2.4.2-5.2.FC2.
Comment 2 Mark J. Cox 2004-11-03 07:46:47 EST
This issue is only a DoS on the connection the attacker is using.

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