(Debian Issues Fix for Moxftp) Moxftp Client Buffer Overflow Lets Remote Servers Execute Arbitrary Code on the Client
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SecurityTracker Alert ID: 1006524 |
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SecurityTracker URL: http://securitytracker.com/id/1006524
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CVE Reference:
CVE-2003-0203
(Links to External Site)
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Date: Apr 9 2003
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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): 2.2
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Description:
A buffer overflow vulnerability was reported in the moxftp FTP client. A remote FTP server can execute arbitrary code on the client when the client connects to the malicious server.
It is reported that a malicious remote server can supply a specially crafted '220' banner to the client to trigger a buffer overflow. The following format can be used, according to the report:
[508 bytes][ebp ][eip ][nops][shellcode]
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Impact:
A remote server can execute arbitrary code on the client when the client connects to the server.
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Solution:
Debian has released a fix in version 2.2-18.1 for the stable distribution (woody), in version 2.2-13.1 for the old stable distribution (potato), in version 2.2-18.20 for the unstable distribution (sid).
Debian GNU/Linux 2.2 alias potato:
Source archives:
http://security.debian.org/pool/updates/main/m/moxftp/moxftp_2.2-13.1.dsc
Size/MD5 checksum: 561 ad7b7294a9bbfb6d612ddf5e1a917d6e
http://security.debian.org/pool/updates/main/m/moxftp/moxftp_2.2-13.1.diff.gz
Size/MD5 checksum: 35420 3b770b2cdff02d1a96d0c007f75a3a62
http://security.debian.org/pool/updates/main/m/moxftp/moxftp_2.2.orig.tar.gz
Size/MD5 checksum: 937939 2c466b136a0adb20f9d62f2749c283ad
Alpha architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-13.1_alpha.deb
Size/MD5 checksum: 225260 7f9c2a5468d1318c42d2b9b94a34abc5
ARM architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-13.1_arm.deb
Size/MD5 checksum: 174544 ab1bf4ae23a81dd913ee15928850dc68
Intel IA-32 architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-13.1_i386.deb
Size/MD5 checksum: 164102 633906e41fb0f661929409b5adc5212b
Motorola 680x0 architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-13.1_m68k.deb
Size/MD5 checksum: 155636 4a902000f5e9ac9e2d173667aa3bb71d
PowerPC architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-13.1_powerpc.deb
Size/MD5 checksum: 184736 741ba17ab314833039a78c7b225025f2
Sun Sparc architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-13.1_sparc.deb
Size/MD5 checksum: 179054 c98e29ba6d2517a837fe3bebd15422bc
Debian GNU/Linux 3.0 alias woody:
Source archives:
http://security.debian.org/pool/updates/main/m/moxftp/moxftp_2.2-18.1.dsc
Size/MD5 checksum: 567 02f4161e56d5fa054ae6e8a56209d1a2
http://security.debian.org/pool/updates/main/m/moxftp/moxftp_2.2-18.1.diff.gz
Size/MD5 checksum: 34166 db8798b3d175cae96e78b0e318ce9f6c
http://security.debian.org/pool/updates/main/m/moxftp/moxftp_2.2.orig.tar.gz
Size/MD5 checksum: 937939 2c466b136a0adb20f9d62f2749c283ad
Alpha architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_alpha.deb
Size/MD5 checksum: 219866 f92ec2e807a83d519b41730899db9d93
ARM architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_arm.deb
Size/MD5 checksum: 175714 9f5a9d5957eca736e092651d636c7b0a
Intel IA-32 architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_i386.deb
Size/MD5 checksum: 164724 5db825ca517be4df03976bd4b11fa518
Intel IA-64 architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_ia64.deb
Size/MD5 checksum: 276338 0380683fcbaa6b3485df82181f82d325
HP Precision architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_hppa.deb
Size/MD5 checksum: 201558 e7c9933ee622678bdedd9b01b494a92b
Motorola 680x0 architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_m68k.deb
Size/MD5 checksum: 155354 d89563cdd8c740683d9544eabd4ff335
Big endian MIPS architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_mips.deb
Size/MD5 checksum: 202406 18c9a473e48d1104a4fbd94366b2dcc8
Little endian MIPS architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_mipsel.deb
Size/MD5 checksum: 200754 a89ee695bd86a51783d27383fb50d746
PowerPC architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_powerpc.deb
Size/MD5 checksum: 185086 fe451dd341eb07a72f58200fd91819c5
IBM S/390 architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_s390.deb
Size/MD5 checksum: 174340 04c6b8a63ecfcac0b5209bbe6eee9fd9
Sun Sparc architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_sparc.deb
Size/MD5 checksum: 178416 38b078edb86b7dcb594404d92cbec3e8
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Vendor URL: www.debian.org/security/ (Links to External Site)
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Cause:
Boundary error
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Underlying OS:
Linux (Debian)
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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: Tue, 8 Apr 2003 17:45:57 +0200 (CEST)
Subject: [SECURITY] [DSA 281-1] New xftp packages fix arbitrary code execution
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
- --------------------------------------------------------------------------
Debian Security Advisory DSA 281-1 security@debian.org
http://www.debian.org/security/ Martin Schulze
April 8th, 2003 http://www.debian.org/security/faq
- --------------------------------------------------------------------------
Package : moxftp
Vulnerability : buffer overflow
Problem-Type : remote
Debian-specific: no
CVE Id : CAN-2003-0203
Knud Erik Højgaard discovered a vulnerability in moxftp (and xftp
respectively), an Athena X interface to FTP. Insufficient bounds
checking could lead to execution of arbitrary code, provided by a
malicious FTP server. Erik Tews fixed this.
For the stable distribution (woody) this problem has been fixed in
version 2.2-18.1.
For the old stable distribution (potato) this problem has been fixed
in version 2.2-13.1.
For the unstable distribution (sid) this problem has been fixed
in version 2.2-18.20.
We recommend that you upgrade your xftp package.
Upgrade Instructions
- --------------------
wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.
If you are using the apt-get package manager, use the line for
sources.list as given below:
apt-get update
will update the internal database
apt-get upgrade
will install corrected packages
You may use an automated update by adding the resources from the
footer to the proper configuration.
Debian GNU/Linux 2.2 alias potato
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Source archives:
http://security.debian.org/pool/updates/main/m/moxftp/moxftp_2.2-13.1.dsc
Size/MD5 checksum: 561 ad7b7294a9bbfb6d612ddf5e1a917d6e
http://security.debian.org/pool/updates/main/m/moxftp/moxftp_2.2-13.1.diff.gz
Size/MD5 checksum: 35420 3b770b2cdff02d1a96d0c007f75a3a62
http://security.debian.org/pool/updates/main/m/moxftp/moxftp_2.2.orig.tar.gz
Size/MD5 checksum: 937939 2c466b136a0adb20f9d62f2749c283ad
Alpha architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-13.1_alpha.deb
Size/MD5 checksum: 225260 7f9c2a5468d1318c42d2b9b94a34abc5
ARM architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-13.1_arm.deb
Size/MD5 checksum: 174544 ab1bf4ae23a81dd913ee15928850dc68
Intel IA-32 architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-13.1_i386.deb
Size/MD5 checksum: 164102 633906e41fb0f661929409b5adc5212b
Motorola 680x0 architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-13.1_m68k.deb
Size/MD5 checksum: 155636 4a902000f5e9ac9e2d173667aa3bb71d
PowerPC architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-13.1_powerpc.deb
Size/MD5 checksum: 184736 741ba17ab314833039a78c7b225025f2
Sun Sparc architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-13.1_sparc.deb
Size/MD5 checksum: 179054 c98e29ba6d2517a837fe3bebd15422bc
Debian GNU/Linux 3.0 alias woody
- --------------------------------
Source archives:
http://security.debian.org/pool/updates/main/m/moxftp/moxftp_2.2-18.1.dsc
Size/MD5 checksum: 567 02f4161e56d5fa054ae6e8a56209d1a2
http://security.debian.org/pool/updates/main/m/moxftp/moxftp_2.2-18.1.diff.gz
Size/MD5 checksum: 34166 db8798b3d175cae96e78b0e318ce9f6c
http://security.debian.org/pool/updates/main/m/moxftp/moxftp_2.2.orig.tar.gz
Size/MD5 checksum: 937939 2c466b136a0adb20f9d62f2749c283ad
Alpha architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_alpha.deb
Size/MD5 checksum: 219866 f92ec2e807a83d519b41730899db9d93
ARM architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_arm.deb
Size/MD5 checksum: 175714 9f5a9d5957eca736e092651d636c7b0a
Intel IA-32 architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_i386.deb
Size/MD5 checksum: 164724 5db825ca517be4df03976bd4b11fa518
Intel IA-64 architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_ia64.deb
Size/MD5 checksum: 276338 0380683fcbaa6b3485df82181f82d325
HP Precision architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_hppa.deb
Size/MD5 checksum: 201558 e7c9933ee622678bdedd9b01b494a92b
Motorola 680x0 architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_m68k.deb
Size/MD5 checksum: 155354 d89563cdd8c740683d9544eabd4ff335
Big endian MIPS architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_mips.deb
Size/MD5 checksum: 202406 18c9a473e48d1104a4fbd94366b2dcc8
Little endian MIPS architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_mipsel.deb
Size/MD5 checksum: 200754 a89ee695bd86a51783d27383fb50d746
PowerPC architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_powerpc.deb
Size/MD5 checksum: 185086 fe451dd341eb07a72f58200fd91819c5
IBM S/390 architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_s390.deb
Size/MD5 checksum: 174340 04c6b8a63ecfcac0b5209bbe6eee9fd9
Sun Sparc architecture:
http://security.debian.org/pool/updates/main/m/moxftp/xftp_2.2-18.1_sparc.deb
Size/MD5 checksum: 178416 38b078edb86b7dcb594404d92cbec3e8
These files will probably be moved into the stable distribution on
its next revision.
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For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>
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