From: Secunia Security Advisories (sec-advsecunia.com)
Date: Wed Jun 11 2008 - 18:24:04 CDT

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TITLE:
FreeType Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA30600

VERIFY ADVISORY:
http://secunia.com/advisories/30600/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
From remote

SOFTWARE:
FreeType 2.x
http://secunia.com/product/10004/

DESCRIPTION:
Some vulnerabilities have been reported in FreeType, which
potentially can be exploited by malicious people to compromise an
application using the library.

1) An integer overflow error exists in the processing of PFB font
files. This can be exploited to cause a heap-based buffer overflow
via a PFB file containing a specially crafted "Private" dictionary
table.

2) An error in the processing of PFB font files can be exploited to
trigger the "free()" of memory areas that are not allocated on the
heap.

3) An off-by-one error exists in the processing of PFB font files.
This can be exploited to cause a one-byte heap-based buffer overflow
via a specially crafted PFB file.

4) An off-by-one error exists in the implementation of the "SHC"
instruction while processing TTF files. This can be exploited to
cause a one-byte heap-based buffer overflow via a specially crafted
TTF file.

Successful exploitation of the vulnerabilities may allow execution of
arbitrary code.

The vulnerabilities are reported in version 2.3.5. Prior versions may
also be affected.

SOLUTION:
Update to version 2.3.6.

PROVIDED AND/OR DISCOVERED BY:
regenrecht, reported via iDefense

ORIGINAL ADVISORY:
FreeType:
http://sourceforge.net/project/shownotes.php?release_id=605780

iDefense:
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=715
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=716
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=717

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About:
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