(Trustix Issues Fix) Libxml2 URL Parsing Buffer Overflow May Let Remote Users Execute Arbitrary Code
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SecurityTracker Alert ID: 1009339 |
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SecurityTracker URL: http://securitytracker.com/id/1009339
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CVE Reference:
CAN-2004-0110
(Links to External Site)
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Date: Mar 8 2004
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Impact:
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 2.6.6
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Description:
A buffer overflow vulnerability was reported in Libxml2. A remote user may be able to execute arbitrary code on an application that uses Libxml2.
It is reported that there is an overflow in libxml2 that can be triggered when parsing remote resources via FTP or HTTP. A long URL can trigger the overflow, the report said.
The flaw reportedly resides in 'nanoftp.c' and 'nanohttp.c'
Yuuichi Teranishi is credited with discovering the flaw.
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Impact:
A remote user may be able to cause a target application that uses Libxml2 to execute arbitrary code with the privileges of the target application. The specific impact depends on the application using Libxml2.
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Solution:
Trustix has released a fix, available at:
http://http.trustix.org/pub/trustix/updates/
ftp://ftp.trustix.org/pub/trustix/updates/
Users of the SWUP tool can update automatically using 'swup --upgrade'.
The MD5sums of the packages are:
13066c223f0c3148eb69cfd399ea3f14 2.0/rpms/libxml2-2.5.10-1tr.i586.rpm
b0a80332a30d823552dc99a13ffbf689 2.0/rpms/libxml2-devel-2.5.10-1tr.i586.rpm
f58ec53e75a663aee96b7e472d01874f 2.0/rpms/libxml2-python-2.5.10-1tr.i586.rpm
2a048d808097e162648d7f31f6c0ada5 2.0/srpms/libxml2-2.5.10-1tr.src.rpm
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Vendor URL: www.xmlsoft.org/index.html (Links to External Site)
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Cause:
Boundary error
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Underlying OS:
Linux (Trustix)
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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: Sat, 6 Mar 2004 14:52:20 +0100
Subject: TSLSA-2004-0010 - libxml2
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
- --------------------------------------------------------------------------
Trustix Secure Linux Security Advisory #2004-0010
Package name: libxml2
Summary: buffer overrun in nanohttp
Date: 2004-03-05
Affected versions: Trustix 2.0
- --------------------------------------------------------------------------
Package description:
This library allows to manipulate XML files. It includes support
to read, modify and write XML and HTML files.
Problem description:
URLs longer than 4096 bytes would cause an overflow while using nanohttp
in libxml2.
Action:
We recommend that all systems with this package installed be upgraded.
Please note that if you do not need the functionality provided by this
package, you may want to remove it from your system.
Location:
All Trustix updates are available from
<URI:http://http.trustix.org/pub/trustix/updates/>
<URI:ftp://ftp.trustix.org/pub/trustix/updates/>
About Trustix Secure Linux:
Trustix Secure Linux is a small Linux distribution for servers. With focus
on security and stability, the system is painlessly kept safe and up to
date from day one using swup, the automated software updater.
Automatic updates:
Users of the SWUP tool can enjoy having updates automatically
installed using 'swup --upgrade'.
Public testing:
Most updates for Trustix are made available for public testing some time
before release.
If you want to contribute by testing the various packages in the
testing tree, please feel free to share your findings on the
tsl-discuss mailinglist.
The testing tree is located at
<URI:http://tsldev.trustix.org/cloud/>
You may also use swup for public testing of updates:
site {
class = 0
location = "http://tsldev.trustix.org/cloud/rdfs/latest.rdf"
regexp = ".*"
}
Questions?
Check out our mailing lists:
<URI:http://www.trustix.org/support/>
Verification:
This advisory along with all Trustix packages are signed with the
TSL sign key.
This key is available from:
<URI:http://www.trustix.org/TSL-SIGN-KEY>
The advisory itself is available from the errata pages at
<URI:http://www.trustix.org/errata/trustix-2.0/>
or directly at
<URI:http://www.trustix.org/errata/misc/2004/TSL-2004-0010-libxml2.asc.txt>
MD5sums of the packages:
- --------------------------------------------------------------------------
13066c223f0c3148eb69cfd399ea3f14 2.0/rpms/libxml2-2.5.10-1tr.i586.rpm
b0a80332a30d823552dc99a13ffbf689 2.0/rpms/libxml2-devel-2.5.10-1tr.i586.rpm
f58ec53e75a663aee96b7e472d01874f 2.0/rpms/libxml2-python-2.5.10-1tr.i586.rpm
2a048d808097e162648d7f31f6c0ada5 2.0/srpms/libxml2-2.5.10-1tr.src.rpm
- --------------------------------------------------------------------------
Trustix Security Team
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