WGet NLST Client Side File Overwriting Vulnerability

BID:6352

Info

WGet NLST Client Side File Overwriting Vulnerability

Bugtraq ID: 6352
Class: Input Validation Error
CVE: CVE-2002-1344
Remote: Yes
Local: No
Published: Dec 10 2002 12:00AM
Updated: Jul 11 2009 07:16PM
Credit: Vulnerability discovery credited to Steve Christey.
Vulnerable: Sun Cobalt RaQ XTR
GNU wget 1.8.2
+ Immunix Immunix OS 7+
 + MandrakeSoft Corporate Server 2.1 x86_64
 + MandrakeSoft Corporate Server 2.1
+ MandrakeSoft Single Network Firewall 7.2
+ Mandriva Linux Mandrake 9.0
+ Mandriva Linux Mandrake 8.2 ppc
 + Mandriva Linux Mandrake 8.2
+ Mandriva Linux Mandrake 8.1 ia64
 + Mandriva Linux Mandrake 8.1
+ Mandriva Linux Mandrake 8.0 ppc
 + Mandriva Linux Mandrake 8.0
+ Mandriva Linux Mandrake 7.2
+ Redhat Linux 8.0 i386
 + Redhat Linux 7.3 i386
 + Redhat Linux 7.2 ia64
 + Redhat Linux 7.2 i386
 + Redhat Linux 7.1 ia64
 + Redhat Linux 7.1 i386
 + Redhat Linux 7.0 i386
 + Redhat Linux 6.2 i386
 + S.u.S.E. Linux Personal 9.3
+ S.u.S.E. Linux Personal 9.2 x86_64
 + S.u.S.E. Linux Personal 9.2
+ S.u.S.E. Linux Personal 9.1 x86_64
 + S.u.S.E. Linux Personal 9.1
+ S.u.S.E. Linux Personal 9.0 x86_64
 + S.u.S.E. Linux Personal 9.0
+ S.u.S.E. Linux Personal 8.2
+ SuSE Linux 8.1
+ SuSE Linux 8.0 i386
 + SuSE Linux 8.0
+ Trustix Secure Linux 1.5
GNU wget 1.8.1
+ Debian Linux 3.0 sparc
 + Debian Linux 3.0 s/390
 + Debian Linux 3.0 ppc
 + Debian Linux 3.0 mipsel
 + Debian Linux 3.0 mips
 + Debian Linux 3.0 m68k
 + Debian Linux 3.0 ia-64
 + Debian Linux 3.0 ia-32
 + Debian Linux 3.0 hppa
 + Debian Linux 3.0 arm
 + Debian Linux 3.0 alpha
 GNU wget 1.8
GNU wget 1.7.1
GNU wget 1.7
GNU wget 1.6
GNU wget 1.5.3
+ Debian Linux 2.2 sparc
 + Debian Linux 2.2 powerpc
 + Debian Linux 2.2 IA-32
 + Debian Linux 2.2 arm
 + Debian Linux 2.2 alpha
 + Debian Linux 2.2 68k
Not Vulnerable:

Discussion

WGet NLST Client Side File Overwriting Vulnerability

wget is a freely available, open source FTP utility. It is included with many Unix and Linux operating systems.

wget does not properly handle some types of server responses. When a NLST response is received from an FTP server, RFC specifications require that clients check the input to see if it contains directory information. wget does not properly check this information, which may allow a remote FTP server to overwrite files on the client system.

Exploit / POC

WGet NLST Client Side File Overwriting Vulnerability

Currently we are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

Solution / Fix

WGet NLST Client Side File Overwriting Vulnerability

Solution:
Sun have released a security update to address this issue in the RAQ XTR. Please see references section for further details. A fix is linked below.

RedHat has released advisory RHSA-2002:229-10 to address this issue.

Mandrake has released a security advisory (MDKSA-2002:86) containing fixes.

Debian has made fixes available. See referenced advisory for additional details.

Gentoo has released an advisory and fix for this issue. Please see the attached advisory for details on obtaining and applying fixes.

SCO has made fixes for Caldera Linux available.

Immunix has released a security advisory (IMNX-2003-7+-011-01) containing fixes to address this issue. Users are advised to upgrade as soon as possible.

Fixes available:


Sun Cobalt RaQ XTR

GNU wget 1.5.3

GNU wget 1.7.1

GNU wget 1.8.1

GNU wget 1.8.2

References

WGet NLST Client Side File Overwriting Vulnerability

References:

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