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Want to write PoC's and Exploits?

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TITLE:
X11 libXfont PCF Integer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA21450

VERIFY ADVISORY:
http://secunia.com/advisories/21450/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
X Window System 11 (X11) 6.x
http://secunia.com/product/3913/
X Window System 11 (X11) 7.x
http://secunia.com/product/8806/

DESCRIPTION:
A vulnerability has been reported in libXfont, which can be exploited
by malicious people to cause a DoS (Denial of Service) and potentially
compromise an application using the library.

The vulnerability is caused due to integer overflows within the PCF
font file parser. This can potentially be exploited to cause a
heap-based buffer overflow via a specially crafted font file.

This is related to:
SA20100

Successful exploitation may allow execution of arbitrary code.

SOLUTION:
Apply patch.
http://bugs.freedesktop.org/attachment.cgi?id=6231

ORIGINAL ADVISORY:
https://bugs.freedesktop.org/show_bug.cgi?id=7535

OTHER REFERENCES:
SA20100:
http://secunia.com/advisories/20100/

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About:
This Advisory was delivered by Secunia as a free service to help
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http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
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Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
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