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(Red Hat Issues Fix) Libxml2 URL Parsing and DNS Resolution Buffer Overflows May Let Remote Users Execute Arbitrary Code
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SecurityTracker Alert ID: 1012607 |
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SecurityTracker URL: http://securitytracker.com/id/1012607
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CVE Reference:
CAN-2004-0989
(Links to External Site)
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Date: Dec 16 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): 2.6.12, 2.6.13
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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:
Red Hat has released a fix.
Red Hat Enterprise Linux AS (Advanced Server) version 2.1:
SRPMS:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/libxml-1.8.14-3.src.rpm
8d1802bcdd2a7085e7158a7ca68ab523 libxml-1.8.14-3.src.rpm
i386:
e2ee01c57caf52c62b1ac9a229fc58f0 libxml-1.8.14-3.i386.rpm
fd04239db40f4c2d9de4cf76791c409e libxml-devel-1.8.14-3.i386.rpm
ia64:
907f1c8f10e96b6c785d4cb5b7f7c399 libxml-1.8.14-3.ia64.rpm
a9ca532078e6b35f2d01584453a3a6fe libxml-devel-1.8.14-3.ia64.rpm
Red Hat Linux Advanced Workstation 2.1:
SRPMS:
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/libxml-1.8.14-3.src.rpm
8d1802bcdd2a7085e7158a7ca68ab523 libxml-1.8.14-3.src.rpm
ia64:
907f1c8f10e96b6c785d4cb5b7f7c399 libxml-1.8.14-3.ia64.rpm
a9ca532078e6b35f2d01584453a3a6fe libxml-devel-1.8.14-3.ia64.rpm
Red Hat Enterprise Linux ES version 2.1:
SRPMS:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/libxml-1.8.14-3.src.rpm
8d1802bcdd2a7085e7158a7ca68ab523 libxml-1.8.14-3.src.rpm
i386:
e2ee01c57caf52c62b1ac9a229fc58f0 libxml-1.8.14-3.i386.rpm
fd04239db40f4c2d9de4cf76791c409e libxml-devel-1.8.14-3.i386.rpm
Red Hat Enterprise Linux WS version 2.1:
SRPMS:
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/libxml-1.8.14-3.src.rpm
8d1802bcdd2a7085e7158a7ca68ab523 libxml-1.8.14-3.src.rpm
i386:
e2ee01c57caf52c62b1ac9a229fc58f0 libxml-1.8.14-3.i386.rpm
fd04239db40f4c2d9de4cf76791c409e libxml-devel-1.8.14-3.i386.rpm
Red Hat Enterprise Linux AS version 3:
SRPMS:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/libxml-1.8.17-9.2.src.rpm
0d8ee723cc5bfb46adedf334be96dcbe libxml-1.8.17-9.2.src.rpm
i386:
1fa0e7d164a4d3d5432732060c67f985 libxml-1.8.17-9.2.i386.rpm
6747de74e075db51e9a40c02ea0905fa libxml-devel-1.8.17-9.2.i386.rpm
ia64:
6e7730063c22539fb40658cc763a2bd3 libxml-1.8.17-9.2.ia64.rpm
594c3955d725c7aad2c3ad89194d0f4b libxml-devel-1.8.17-9.2.ia64.rpm
ppc:
e04cb28f14a0381a7d92aa9b57b3b43a libxml-1.8.17-9.2.ppc.rpm
b52b8e7f667842bbcb319e0c5cb9132e libxml-devel-1.8.17-9.2.ppc.rpm
s390:
f8cb54901760145e5123832d27bf7334 libxml-1.8.17-9.2.s390.rpm
88ace5024d54b0f7a104bb6310974fd6 libxml-devel-1.8.17-9.2.s390.rpm
s390x:
7d268017ddac87e213b1b9e0d22be27b libxml-1.8.17-9.2.s390x.rpm
eda80205b0afd05ca6aafce032a1072f libxml-devel-1.8.17-9.2.s390x.rpm
x86_64:
140e93f6366ba860a6301629bfe71c08 libxml-1.8.17-9.2.x86_64.rpm
c3e4b6e36068b0a2ecfbe75491f2b967 libxml-devel-1.8.17-9.2.x86_64.rpm
Red Hat Desktop version 3:
SRPMS:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/libxml-1.8.17-9.2.src.rpm
0d8ee723cc5bfb46adedf334be96dcbe libxml-1.8.17-9.2.src.rpm
i386:
1fa0e7d164a4d3d5432732060c67f985 libxml-1.8.17-9.2.i386.rpm
6747de74e075db51e9a40c02ea0905fa libxml-devel-1.8.17-9.2.i386.rpm
x86_64:
140e93f6366ba860a6301629bfe71c08 libxml-1.8.17-9.2.x86_64.rpm
c3e4b6e36068b0a2ecfbe75491f2b967 libxml-devel-1.8.17-9.2.x86_64.rpm
Red Hat Enterprise Linux ES version 3:
SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/libxml-1.8.17-9.2.src.rpm
0d8ee723cc5bfb46adedf334be96dcbe libxml-1.8.17-9.2.src.rpm
i386:
1fa0e7d164a4d3d5432732060c67f985 libxml-1.8.17-9.2.i386.rpm
6747de74e075db51e9a40c02ea0905fa libxml-devel-1.8.17-9.2.i386.rpm
ia64:
6e7730063c22539fb40658cc763a2bd3 libxml-1.8.17-9.2.ia64.rpm
594c3955d725c7aad2c3ad89194d0f4b libxml-devel-1.8.17-9.2.ia64.rpm
x86_64:
140e93f6366ba860a6301629bfe71c08 libxml-1.8.17-9.2.x86_64.rpm
c3e4b6e36068b0a2ecfbe75491f2b967 libxml-devel-1.8.17-9.2.x86_64.rpm
Red Hat Enterprise Linux WS version 3:
SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/libxml-1.8.17-9.2.src.rpm
0d8ee723cc5bfb46adedf334be96dcbe libxml-1.8.17-9.2.src.rpm
i386:
1fa0e7d164a4d3d5432732060c67f985 libxml-1.8.17-9.2.i386.rpm
6747de74e075db51e9a40c02ea0905fa libxml-devel-1.8.17-9.2.i386.rpm
ia64:
6e7730063c22539fb40658cc763a2bd3 libxml-1.8.17-9.2.ia64.rpm
594c3955d725c7aad2c3ad89194d0f4b libxml-devel-1.8.17-9.2.ia64.rpm
x86_64:
140e93f6366ba860a6301629bfe71c08 libxml-1.8.17-9.2.x86_64.rpm
c3e4b6e36068b0a2ecfbe75491f2b967 libxml-devel-1.8.17-9.2.x86_64.rpm
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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 (Red Hat Enterprise)
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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: Thu, 16 Dec 2004 16:12 -0500
Subject: [RHSA-2004:650-01] Updated libxml package fixes security
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
- ---------------------------------------------------------------------
Red Hat Security Advisory
Synopsis: Updated libxml package fixes security vulnerabilities
Advisory ID: RHSA-2004:650-01
Advisory URL: https://rhn.redhat.com/errata/RHSA-2004-650.html
Issue date: 2004-12-16
Updated on: 2004-12-16
Product: Red Hat Enterprise Linux
Cross references: RHSA_2004:615
CVE Names: CAN-2004-0110 CAN-2004-0989
- ---------------------------------------------------------------------
1. Summary:
An updated libxml package that fixes multiple buffer overflows is now
available.
2. Relevant releases/architectures:
Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - i386, ia64
Red Hat Linux Advanced Workstation 2.1 - ia64
Red Hat Enterprise Linux ES version 2.1 - i386
Red Hat Enterprise Linux WS version 2.1 - i386
Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Desktop version 3 - i386, x86_64
Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64
3. Problem description:
The libxml package contains a library for manipulating XML files.
Multiple buffer overflow bugs have been found in libxml versions prior to
2.6.14. If an attacker can trick a user into passing a specially crafted
FTP URL or FTP proxy URL to an application that uses the vulnerable
functions of libxml, it could be possible to execute arbitrary code.
Additionally, if an attacker can return a specially crafted DNS request to
libxml, it could be possible to execute arbitrary code. The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name
CAN-2004-0989 to this issue.
Yuuichi Teranishi discovered a flaw in libxml versions prior to 2.6.6.
When fetching a remote resource via FTP or HTTP, libxml uses special
parsing routines. These routines can overflow a buffer if passed a very
long URL. If an attacker is able to find an application using libxml that
parses remote resources and allows them to influence the URL, then this
flaw could be used to execute arbitrary code. The Common Vulnerabilities
and Exposures project (cve.mitre.org) has assigned the name CAN-2004-0110
to this issue.
All users are advised to upgrade to this updated package, which contains
backported patches and is not vulnerable to these issues.
4. Solution:
Before applying this update, make sure that all previously-released
errata relevant to your system have been applied. Use Red Hat
Network to download and update your packages. To launch the Red Hat
Update Agent, use the following command:
up2date
For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:
http://www.redhat.com/docs/manuals/enterprise/
5. Bug IDs fixed (http://bugzilla.redhat.com/ for more info):
139090 - CAN-2004-0110 multiple buffer overflows (CAN-2004-0989)
6. RPMs required:
Red Hat Enterprise Linux AS (Advanced Server) version 2.1:
SRPMS:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/libxml-1.8.14-3.src.rpm
8d1802bcdd2a7085e7158a7ca68ab523 libxml-1.8.14-3.src.rpm
i386:
e2ee01c57caf52c62b1ac9a229fc58f0 libxml-1.8.14-3.i386.rpm
fd04239db40f4c2d9de4cf76791c409e libxml-devel-1.8.14-3.i386.rpm
ia64:
907f1c8f10e96b6c785d4cb5b7f7c399 libxml-1.8.14-3.ia64.rpm
a9ca532078e6b35f2d01584453a3a6fe libxml-devel-1.8.14-3.ia64.rpm
Red Hat Linux Advanced Workstation 2.1:
SRPMS:
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/libxml-1.8.14-3.src.rpm
8d1802bcdd2a7085e7158a7ca68ab523 libxml-1.8.14-3.src.rpm
ia64:
907f1c8f10e96b6c785d4cb5b7f7c399 libxml-1.8.14-3.ia64.rpm
a9ca532078e6b35f2d01584453a3a6fe libxml-devel-1.8.14-3.ia64.rpm
Red Hat Enterprise Linux ES version 2.1:
SRPMS:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/libxml-1.8.14-3.src.rpm
8d1802bcdd2a7085e7158a7ca68ab523 libxml-1.8.14-3.src.rpm
i386:
e2ee01c57caf52c62b1ac9a229fc58f0 libxml-1.8.14-3.i386.rpm
fd04239db40f4c2d9de4cf76791c409e libxml-devel-1.8.14-3.i386.rpm
Red Hat Enterprise Linux WS version 2.1:
SRPMS:
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/libxml-1.8.14-3.src.rpm
8d1802bcdd2a7085e7158a7ca68ab523 libxml-1.8.14-3.src.rpm
i386:
e2ee01c57caf52c62b1ac9a229fc58f0 libxml-1.8.14-3.i386.rpm
fd04239db40f4c2d9de4cf76791c409e libxml-devel-1.8.14-3.i386.rpm
Red Hat Enterprise Linux AS version 3:
SRPMS:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/libxml-1.8.17-9.2.src.rpm
0d8ee723cc5bfb46adedf334be96dcbe libxml-1.8.17-9.2.src.rpm
i386:
1fa0e7d164a4d3d5432732060c67f985 libxml-1.8.17-9.2.i386.rpm
6747de74e075db51e9a40c02ea0905fa libxml-devel-1.8.17-9.2.i386.rpm
ia64:
6e7730063c22539fb40658cc763a2bd3 libxml-1.8.17-9.2.ia64.rpm
594c3955d725c7aad2c3ad89194d0f4b libxml-devel-1.8.17-9.2.ia64.rpm
ppc:
e04cb28f14a0381a7d92aa9b57b3b43a libxml-1.8.17-9.2.ppc.rpm
b52b8e7f667842bbcb319e0c5cb9132e libxml-devel-1.8.17-9.2.ppc.rpm
s390:
f8cb54901760145e5123832d27bf7334 libxml-1.8.17-9.2.s390.rpm
88ace5024d54b0f7a104bb6310974fd6 libxml-devel-1.8.17-9.2.s390.rpm
s390x:
7d268017ddac87e213b1b9e0d22be27b libxml-1.8.17-9.2.s390x.rpm
eda80205b0afd05ca6aafce032a1072f libxml-devel-1.8.17-9.2.s390x.rpm
x86_64:
140e93f6366ba860a6301629bfe71c08 libxml-1.8.17-9.2.x86_64.rpm
c3e4b6e36068b0a2ecfbe75491f2b967 libxml-devel-1.8.17-9.2.x86_64.rpm
Red Hat Desktop version 3:
SRPMS:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/libxml-1.8.17-9.2.src.rpm
0d8ee723cc5bfb46adedf334be96dcbe libxml-1.8.17-9.2.src.rpm
i386:
1fa0e7d164a4d3d5432732060c67f985 libxml-1.8.17-9.2.i386.rpm
6747de74e075db51e9a40c02ea0905fa libxml-devel-1.8.17-9.2.i386.rpm
x86_64:
140e93f6366ba860a6301629bfe71c08 libxml-1.8.17-9.2.x86_64.rpm
c3e4b6e36068b0a2ecfbe75491f2b967 libxml-devel-1.8.17-9.2.x86_64.rpm
Red Hat Enterprise Linux ES version 3:
SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/libxml-1.8.17-9.2.src.rpm
0d8ee723cc5bfb46adedf334be96dcbe libxml-1.8.17-9.2.src.rpm
i386:
1fa0e7d164a4d3d5432732060c67f985 libxml-1.8.17-9.2.i386.rpm
6747de74e075db51e9a40c02ea0905fa libxml-devel-1.8.17-9.2.i386.rpm
ia64:
6e7730063c22539fb40658cc763a2bd3 libxml-1.8.17-9.2.ia64.rpm
594c3955d725c7aad2c3ad89194d0f4b libxml-devel-1.8.17-9.2.ia64.rpm
x86_64:
140e93f6366ba860a6301629bfe71c08 libxml-1.8.17-9.2.x86_64.rpm
c3e4b6e36068b0a2ecfbe75491f2b967 libxml-devel-1.8.17-9.2.x86_64.rpm
Red Hat Enterprise Linux WS version 3:
SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/libxml-1.8.17-9.2.src.rpm
0d8ee723cc5bfb46adedf334be96dcbe libxml-1.8.17-9.2.src.rpm
i386:
1fa0e7d164a4d3d5432732060c67f985 libxml-1.8.17-9.2.i386.rpm
6747de74e075db51e9a40c02ea0905fa libxml-devel-1.8.17-9.2.i386.rpm
ia64:
6e7730063c22539fb40658cc763a2bd3 libxml-1.8.17-9.2.ia64.rpm
594c3955d725c7aad2c3ad89194d0f4b libxml-devel-1.8.17-9.2.ia64.rpm
x86_64:
140e93f6366ba860a6301629bfe71c08 libxml-1.8.17-9.2.x86_64.rpm
c3e4b6e36068b0a2ecfbe75491f2b967 libxml-devel-1.8.17-9.2.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://www.redhat.com/security/team/key.html#package
7. References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0110
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0989
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://www.redhat.com/security/team/contact.html
Copyright 2004 Red Hat, Inc.
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