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TITLE:
PDFlib "pdc_fsearch_fopen()" Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA28239

VERIFY ADVISORY:
http://secunia.com/advisories/28239/

CRITICAL:
Less critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
PDFlib 7.x
http://secunia.com/product/17036/

DESCRIPTION:
poplix has discovered a vulnerability in PDFlib, which can be
exploited by malicious people to cause a DoS (Denial of Service) or
potentially compromise an application using the library.

The vulnerability is caused due to a boundary error within the
"pdc_fsearch_fopen()" function. This can be exploited to cause a
stack-based buffer overflow via e.g. a call to "PDF_load_image()"
with an overly long filename parameter.

NOTE: Other functions are also reportedly affected by similar
boundary errors.

The vulnerability is confirmed in version 7.0.2 for Linux on IA-32.
Other versions may also be affected.

SOLUTION:
Do not allow untrusted users to manipulate the parameters passed to
PDFlib functions.

PROVIDED AND/OR DISCOVERED BY:
poplix

ORIGINAL ADVISORY:
http://seclists.org/bugtraq/2007/Dec/0281.html

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About:
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