WGet Insecure File Creation Race Condition Vulnerability

BID:10361

Info

WGet Insecure File Creation Race Condition Vulnerability

Bugtraq ID: 10361
Class: Race Condition Error
CVE: CVE-2004-2014
Remote: No
Local: Yes
Published: May 17 2004 12:00AM
Updated: Jul 12 2009 04:07AM
Credit: Discovery of this vulnerability has been credited to Hugo "Vázquez" "Caramés" <[email protected]>.
Vulnerable: Ubuntu Ubuntu Linux 5.0 4 powerpc
Ubuntu Ubuntu Linux 5.0 4 i386
Ubuntu Ubuntu Linux 5.0 4 amd64
Ubuntu Ubuntu Linux 4.1 ppc
Ubuntu Ubuntu Linux 4.1 ia64
Ubuntu Ubuntu Linux 4.1 ia32
Turbolinux Turbolinux Workstation 8.0
Turbolinux Turbolinux Workstation 7.0
Turbolinux Turbolinux Server 8.0
Turbolinux Turbolinux Server 7.0
Turbolinux Turbolinux Desktop 10.0
Turbolinux Turbolinux 10 F...
Turbolinux Home
Turbolinux Appliance Server Workgroup Edition 1.0
Turbolinux Appliance Server Hosting Edition 1.0
Redhat Enterprise Linux WS 4
Redhat Enterprise Linux WS 3
Redhat Enterprise Linux WS 2.1 IA64
Redhat Enterprise Linux WS 2.1
Redhat Enterprise Linux ES 4
Redhat Enterprise Linux ES 3
Redhat Enterprise Linux ES 2.1 IA64
Redhat Enterprise Linux ES 2.1
Redhat Enterprise Linux AS 4
Redhat Enterprise Linux AS 3
Redhat Enterprise Linux AS 2.1 IA64
Redhat Enterprise Linux AS 2.1
Redhat Desktop 4.0
Redhat Desktop 3.0
Redhat Advanced Workstation for the Itanium Processor 2.1 IA64
Redhat Advanced Workstation for the Itanium Processor 2.1
Mandriva Linux Mandrake 10.2 x86_64
Mandriva Linux Mandrake 10.2
Mandriva Linux Mandrake 10.1 x86_64
Mandriva Linux Mandrake 10.1
MandrakeSoft Multi Network Firewall 2.0
MandrakeSoft Corporate Server 3.0 x86_64
MandrakeSoft Corporate Server 3.0
GNU wget 1.9.1
+ MandrakeSoft Corporate Server 3.0 x86_64
 + MandrakeSoft Corporate Server 3.0
+ Mandriva Linux Mandrake 10.2 x86_64
 + Mandriva Linux Mandrake 10.2
+ Mandriva Linux Mandrake 10.1 x86_64
 + Mandriva Linux Mandrake 10.1
+ Mandriva Linux Mandrake 10.0 AMD64
 + Mandriva Linux Mandrake 10.0
GNU wget 1.9
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 Insecure File Creation Race Condition Vulnerability

The 'wget' utility has been reported prone to a race-condition vulnerability. The issue exists because wget doesn't lock files that it creates and writes to during file downloads.

A local attacker may exploit this condition to corrupt files with the privileges of the victim who is running the vulnerable version of wget.

Exploit / POC

WGet Insecure File Creation Race Condition Vulnerability

The following proof of concept exploit has been supplied:

Solution / Fix

WGet Insecure File Creation Race Condition Vulnerability

Solution:
Please see the referenced advisories for further information.

Currently we are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected]


GNU wget 1.7

GNU wget 1.8.2

GNU wget 1.9.1

References

WGet Insecure File Creation Race Condition Vulnerability

References:

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