Sudo Perl Environment Variable Handling Security Bypass Vulnerability

BID:15394

Info

Sudo Perl Environment Variable Handling Security Bypass Vulnerability

Bugtraq ID: 15394
Class: Input Validation Error
CVE: CVE-2005-4158
Remote: No
Local: Yes
Published: Nov 11 2005 12:00AM
Updated: Oct 24 2006 11:33PM
Credit: Charles Morris is credited with the discovery of this vulnerability.
Vulnerable: Ubuntu Ubuntu Linux 5.10 powerpc
Ubuntu Ubuntu Linux 5.10 i386
Ubuntu Ubuntu Linux 5.10 amd64
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
Trustix Secure Linux 3.0
Trustix Secure Linux 2.2
Trustix Secure Enterprise Linux 2.0
Todd Miller Sudo 1.6.8 p9
Todd Miller Sudo 1.6.8 p8
+ OpenPKG OpenPKG 2.4
+ OpenPKG OpenPKG Current
 + Redhat Fedora Core4
 Todd Miller Sudo 1.6.8 p7
+ Debian Linux 3.1 sparc
 + Debian Linux 3.1 s/390
 + Debian Linux 3.1 ppc
 + Debian Linux 3.1 mipsel
 + Debian Linux 3.1 mips
 + Debian Linux 3.1 m68k
 + Debian Linux 3.1 ia-64
 + Debian Linux 3.1 ia-32
 + Debian Linux 3.1 hppa
 + Debian Linux 3.1 arm
 + Debian Linux 3.1 amd64
 + Debian Linux 3.1 alpha
 + Debian Linux 3.1
+ OpenPKG OpenPKG 2.3
Todd Miller Sudo 1.6.8 p5
+ Ubuntu Ubuntu Linux 5.0 4 powerpc
 + Ubuntu Ubuntu Linux 5.0 4 i386
 + Ubuntu Ubuntu Linux 5.0 4 amd64
 Todd Miller Sudo 1.6.8 p1
+ Mandriva Linux Mandrake 10.2 x86_64
 + Mandriva Linux Mandrake 10.2
+ Mandriva Linux Mandrake 10.1 x86_64
 + Mandriva Linux Mandrake 10.1
+ OpenPKG OpenPKG 2.2
+ OpenPKG OpenPKG Current
 Todd Miller Sudo 1.6.8
Todd Miller Sudo 1.6.7 p5
+ MandrakeSoft Corporate Server 3.0 x86_64
 + MandrakeSoft Corporate Server 3.0
+ Mandriva Linux Mandrake 10.0 AMD64
 + Mandriva Linux Mandrake 10.0
+ OpenPKG OpenPKG 2.1
+ Redhat Fedora Core3
 + Ubuntu Ubuntu Linux 4.1 ppc
 + Ubuntu Ubuntu Linux 4.1 ia64
 + Ubuntu Ubuntu Linux 4.1 ia32
 Todd Miller Sudo 1.6.7
Todd Miller Sudo 1.6.6
+ 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
 + Debian Linux 3.0
+ MandrakeSoft Corporate Server 2.1 x86_64
 + MandrakeSoft Corporate Server 2.1
+ Slackware Linux 8.0
Todd Miller Sudo 1.6.5 p2
+ NetBSD NetBSD 1.5.2
+ OpenBSD OpenBSD 3.1
 + Redhat Linux 7.2 ia64
 + Redhat Linux 7.2 i386
 + Redhat Linux 7.2 alpha
 + Redhat Linux 7.1 ia64
 + Redhat Linux 7.1 i386
 + Redhat Linux 7.1 alpha
 + Redhat Linux 7.0 i386
 + Redhat Linux 7.0 alpha
 - Redhat Linux 6.2 sparc
 - Redhat Linux 6.2 i386
 - Redhat Linux 6.2 alpha
 + SuSE Linux 8.0 i386
 + SuSE Linux 8.0
Todd Miller Sudo 1.6.5 p1
+ Slackware Linux 8.0
Todd Miller Sudo 1.6.5
Todd Miller Sudo 1.6.4 p2
Todd Miller Sudo 1.6.4 p1
Todd Miller Sudo 1.6.4
+ MandrakeSoft Corporate Server 1.0.1
+ MandrakeSoft Single Network Firewall 7.2
+ 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
+ Mandriva Linux Mandrake 7.1
+ Redhat Linux 7.2 ia64
 + Redhat Linux 7.2 i386
 + Redhat Linux 7.2 alpha
 + Redhat Linux 7.1 ia64
 + Redhat Linux 7.1 i386
 + Redhat Linux 7.1 alpha
 + Redhat Linux 7.0 i386
 + Redhat Linux 7.0 alpha
 - Redhat Linux 6.2 sparc
 - Redhat Linux 6.2 i386
 - Redhat Linux 6.2 alpha
 Todd Miller Sudo 1.6.3 p7
- FreeBSD FreeBSD 4.5
- FreeBSD FreeBSD 4.4
- FreeBSD FreeBSD 4.3
+ Redhat Linux 7.2 ia64
 + Redhat Linux 7.2 i386
 + Slackware Linux 8.0
+ SuSE Linux 7.3 sparc
 + SuSE Linux 7.3 ppc
 + SuSE Linux 7.3 i386
 + SuSE Linux 7.3
+ Trustix Secure Linux 1.5
+ Trustix Secure Linux 1.2
+ Trustix Secure Linux 1.1
Todd Miller Sudo 1.6.3 p6
+ Guardian Digital Engarde Secure Linux 1.0.1
+ Guardian Digital Engarde Secure Linux 1.0.1
+ HP Secure OS software for Linux 1.0
+ HP Secure OS software for Linux 1.0
+ Redhat Linux 7.1 ia64
 + Redhat Linux 7.1 ia64
 + Redhat Linux 7.1 i386
 + Redhat Linux 7.1 i386
 + Redhat Linux 7.1 alpha
 + Redhat Linux 7.1 alpha
 + SuSE Linux 7.2 i386
 + SuSE Linux 7.2
+ SuSE Linux 7.2
+ SuSE Linux 7.1 x86
 + SuSE Linux 7.1 x86
 + SuSE Linux 7.1 sparc
 + SuSE Linux 7.1 sparc
 + SuSE Linux 7.1 ppc
 + SuSE Linux 7.1 ppc
 + SuSE Linux 7.1 alpha
 + SuSE Linux 7.1 alpha
 + SuSE Linux 7.1
+ SuSE Linux 7.1
+ SuSE Linux 7.0 sparc
 + SuSE Linux 7.0 sparc
 + SuSE Linux 7.0 ppc
 + SuSE Linux 7.0 ppc
 + SuSE Linux 7.0 i386
 + SuSE Linux 7.0 i386
 + SuSE Linux 7.0 alpha
 + SuSE Linux 7.0 alpha
 + SuSE Linux 7.0
+ SuSE Linux 7.0
+ Wirex Immunix OS 7.0
+ Wirex Immunix OS 7.0
Todd Miller Sudo 1.6.3 p5
Todd Miller Sudo 1.6.3 p4
+ Slackware Linux 7.1
Todd Miller Sudo 1.6.3 p3
Todd Miller Sudo 1.6.3 p2
Todd Miller Sudo 1.6.3 p1
Todd Miller Sudo 1.6.3
+ Redhat Linux 7.0 i386
 + Redhat Linux 7.0 alpha
 Todd Miller Sudo 1.6.2
- Debian Linux 2.2
Todd Miller Sudo 1.6.1
Todd Miller Sudo 1.6
Todd Miller Sudo 1.5.9
+ SuSE Linux 6.4 ppc
 + SuSE Linux 6.4 i386
 + SuSE Linux 6.4
Todd Miller Sudo 1.5.8
Todd Miller Sudo 1.5.7
Todd Miller Sudo 1.5.6
Mandriva Linux Mandrake 2006.0 x86_64
Mandriva Linux Mandrake 2006.0
Mandriva Linux Mandrake 10.2 x86_64
Mandriva Linux Mandrake 10.2
Mandriva Linux Mandrake 10.1 x86_64
Mandriva Linux Mandrake 10.1
MandrakeSoft Multi Network Firewall 2.0
MandrakeSoft Corporate Server 3.0 x86_64
MandrakeSoft Corporate Server 3.0
MandrakeSoft Corporate Server 2.1 x86_64
MandrakeSoft Corporate Server 2.1
Debian Linux 3.1 sparc
Debian Linux 3.1 s/390
Debian Linux 3.1 ppc
Debian Linux 3.1 mipsel
Debian Linux 3.1 mips
Debian Linux 3.1 m68k
Debian Linux 3.1 ia-64
Debian Linux 3.1 ia-32
Debian Linux 3.1 hppa
Debian Linux 3.1 arm
Debian Linux 3.1 amd64
Debian Linux 3.1 alpha
Debian Linux 3.1
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
Debian Linux 3.0
Not Vulnerable: Todd Miller Sudo 1.6.8 p12

Discussion

Sudo Perl Environment Variable Handling Security Bypass Vulnerability

Sudo is prone to a security-bypass vulnerability that could lead to arbitrary code execution. This issue is due to an error in the application when handling the 'PERLLIB', 'PERL5LIB', and 'PERL5OPT' environment variables when tainting is ignored.

An attacker can exploit this vulnerability to bypass security restrictions and include arbitrary library files.

To exploit this vulnerability, an attacker must be able to run Perl scripts through Sudo.

Exploit / POC

Sudo Perl Environment Variable Handling Security Bypass Vulnerability

No exploit is required.

Example text and Perl code to exploit this vulnerability are provided by breno <[email protected]>:

Solution / Fix

Sudo Perl Environment Variable Handling Security Bypass Vulnerability

Solution:
The vendor has addressed this issue in Sudo 1.6.8p12. Contact the vendor to obtain the appropriate updates.

Please see the referenced vendor advisories for information on obtaining and applying the appropriate updates.


Todd Miller Sudo 1.5.6

Todd Miller Sudo 1.5.7

Todd Miller Sudo 1.5.8

Todd Miller Sudo 1.5.9

Todd Miller Sudo 1.6

Todd Miller Sudo 1.6.1

Todd Miller Sudo 1.6.2

Todd Miller Sudo 1.6.3

Todd Miller Sudo 1.6.3 p1

Todd Miller Sudo 1.6.3 p5

Todd Miller Sudo 1.6.3 p4

Todd Miller Sudo 1.6.3 p7

Todd Miller Sudo 1.6.3 p6

Todd Miller Sudo 1.6.3 p2

Todd Miller Sudo 1.6.3 p3

Todd Miller Sudo 1.6.4 p2

Todd Miller Sudo 1.6.4 p1

Todd Miller Sudo 1.6.4

Todd Miller Sudo 1.6.5 p2

Todd Miller Sudo 1.6.5 p1

Todd Miller Sudo 1.6.5

Todd Miller Sudo 1.6.6

Todd Miller Sudo 1.6.7 p5

Todd Miller Sudo 1.6.7

Todd Miller Sudo 1.6.8 p9

Todd Miller Sudo 1.6.8 p5

Todd Miller Sudo 1.6.8

Todd Miller Sudo 1.6.8 p8

Todd Miller Sudo 1.6.8 p1

Todd Miller Sudo 1.6.8 p7

References

Sudo Perl Environment Variable Handling Security Bypass Vulnerability

References:

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