[18017] in bugtraq
DoS vulnerability in rp-pppoe versions <= 2.4
daemon@ATHENA.MIT.EDU (David F. Skoll)
Mon Dec 11 15:52:56 2000
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Message-ID: <Pine.LNX.4.30.0012110847080.3887-100000@shishi.roaringpenguin.com>
Date: Mon, 11 Dec 2000 08:50:38 -0500
Reply-To: "David F. Skoll" <dfs@ROARINGPENGUIN.COM>
From: "David F. Skoll" <dfs@ROARINGPENGUIN.COM>
To: BUGTRAQ@SECURITYFOCUS.COM
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There is a denial-of-service vulnerability in rp-pppoe versions up to
2.4. rp-pppoe is a user-space PPPoE client for a bunch of UNIXes and
Linux, used by many residential ADSL customers.
If you use the "Clamp MSS" option and someone crafts a TCP packet with
an (illegal) "zero-length" option, rp-pppoe will fall into an endless loop.
Eventually, the PPP daemon should time out and kill the connection.
Solution: Upgrade to rp-pppoe 2.5 at http://www.roaringpenguin.com/pppoe/.
If you cannot upgrade quickly, do not use the "Clamp MSS" option until you
can upgrade.
Thanks to Robert Schlabbach for reporting this vulnerability to me.
- --
David F. Skoll
Roaring Penguin Software Inc. | http://www.roaringpenguin.com
GPG fingerprint: 50B4 FA66 CE95 E456 CD8F 96C9 E64D 185C 6646 68E0
GPG public key: http://www.roaringpenguin.com/dskoll-key.txt
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