(Vendor Issues Fix) Libxml2 URL Parsing and DNS Resolution Buffer Overflows May Let Remote Users Execute Arbitrary Code
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SecurityTracker Alert ID: 1011995 |
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SecurityTracker URL: http://securitytracker.com/id/1011995
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CVE Reference:
CAN-2004-0989
(Links to External Site)
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Date: Oct 29 2004
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Impact:
Denial of service via network, Execution of arbitrary code via network, User access via network
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): prior to 2.6.15
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Description:
Some buffer overflow vulnerabilities were reported in Libxml2. A remote user may be able to execute arbitrary code on the target system, depending on how the Libxml2 library is used.
sean reported that a remote user can create a specially crafted FTP URL that, when loaded by the target user, will trigger a buffer overflow. The flaw resides in the xmlNanoFTPScanURL() function in 'nanoftp.c'.
It is also reported that a remote user can create an FTP proxy URL that, when loaded, will also trigger a buffer overflow. The flaw resides in the xmlNanoFTPScanProxy() function in 'nanoftp.c'.
In addition, there are several buffer overflows in the resolution of domain names. A remote user with control of a DNS server or the ability to spoof a DNS server can trigger these buffer overflows to execute arbitrary code on the target user's system.
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Impact:
A remote user may be able to execute arbitrary code on the target system. The specific impact depends on how the Libxml2 library is used.
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Solution:
The vendor has issued a fixed version (2.6.15), available at:
http://xmlsoft.org/downloads.html
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Vendor URL: www.xmlsoft.org/ (Links to External Site)
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Cause:
Boundary error
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Underlying OS:
Linux (Any), UNIX (Any)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Fri, 29 Oct 2004 02:17:10 -0400
Subject: http://xmlsoft.org/news.html
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> 2.6.15: Oct 27 2004
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> * security fixes on the nanoftp and nanohttp modules
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