Yelp Invalid URI Format String Vulnerability

BID:30690

Info

Yelp Invalid URI Format String Vulnerability

Bugtraq ID: 30690
Class: Input Validation Error
CVE: CVE-2008-3533
Remote: Yes
Local: No
Published: Aug 13 2008 12:00AM
Updated: Apr 13 2015 08:58PM
Credit: Aaron Grattafiori
Vulnerable: Ubuntu Ubuntu Linux 8.04 LTS sparc
Ubuntu Ubuntu Linux 8.04 LTS powerpc
Ubuntu Ubuntu Linux 8.04 LTS lpia
Ubuntu Ubuntu Linux 8.04 LTS i386
Ubuntu Ubuntu Linux 8.04 LTS amd64
Ubuntu Ubuntu Linux 7.10 sparc
Ubuntu Ubuntu Linux 7.10 powerpc
Ubuntu Ubuntu Linux 7.10 lpia
Ubuntu Ubuntu Linux 7.10 i386
Ubuntu Ubuntu Linux 7.10 amd64
S.u.S.E. openSUSE 11.0
Mandriva Linux Mandrake 2008.1 x86_64
Mandriva Linux Mandrake 2008.1
Mandriva Linux Mandrake 2008.0 x86_64
Mandriva Linux Mandrake 2008.0
GNOME yelp 2.23.1
Gentoo Linux
Not Vulnerable:

Discussion

Yelp Invalid URI Format String Vulnerability

Yelp is prone to a remote format-string vulnerability because the application fails to properly sanitize user-supplied input before including it in the format-specifier argument of a formatted-printing function.

A remote attacker may exploit this issue to execute arbitrary code with the privileges of the user running the affected application. Failed exploit attempts may cause denial-of-service conditions.

Yelp 2.23.1 is vulnerable; other versions may also be affected.

Exploit / POC

Yelp Invalid URI Format String Vulnerability

The following proof-of-concept URIs are available:

ftp://%08x.%08x.%08x.%08x.%08x.%08x
%x%x%x%x%x%x://
%08x%08x

Solution / Fix

Yelp Invalid URI Format String Vulnerability

Solution:
Fixes are available in the SVN repository. Please see the references for more information.


Ubuntu Ubuntu Linux 7.10 i386

Mandriva Linux Mandrake 2008.1 x86_64

Ubuntu Ubuntu Linux 7.10 powerpc

Mandriva Linux Mandrake 2008.1

Ubuntu Ubuntu Linux 8.04 LTS powerpc

Ubuntu Ubuntu Linux 7.10 amd64

Ubuntu Ubuntu Linux 8.04 LTS i386

Mandriva Linux Mandrake 2008.0 x86_64

Ubuntu Ubuntu Linux 8.04 LTS amd64

Mandriva Linux Mandrake 2008.0

Ubuntu Ubuntu Linux 7.10 sparc

Ubuntu Ubuntu Linux 8.04 LTS lpia

Ubuntu Ubuntu Linux 7.10 lpia

References

Yelp Invalid URI Format String Vulnerability

References:
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