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TITLE:
ImageMagick Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA26926

VERIFY ADVISORY:
http://secunia.com/advisories/26926/

CRITICAL:
Highly critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
ImageMagick 6.x
http://secunia.com/product/3763/
ImageMagick 5.x
http://secunia.com/product/1791/

DESCRIPTION:
Some vulnerabilities have been reported in ImageMagick, which can be
exploited by malicious people to conduct DoS (Denial of Service)
attacks or compromise a user's system.

1) Some integer overflow errors exist within the
"AllocateImageColormap()", "ReadDCMImage()", "ReadDIBImage()", and
"ReadXBMImage()" functions when processing image files. These can be
exploited to cause heap-based buffer overflows via specially crafted
image files.

2) An off-by-one error exists within the "ReadBlobString()" function
in magick/blob.c when processing image files. This can be exploited
to cause a one-byte buffer overflow via a specially crafted image
file.

3) A sign extension error exists within the "ReadDIBImage()" function
when processing image files. This can be exploited to cause a
heap-based buffer overflow when processing specially crafted DIB
files. 

Successful exploitation of the vulnerabilities allows execution of
arbitrary code.

4) Some errors within the "ReadDCMImage()" and "ReadXCFImage()"
functions can be exploited to cause the execution of infinite loops
via specially crafted DCM or XCF files.

The vulnerabilities are reported in versions prior to 6.3.5-9.

SOLUTION:
Update to version 6.3.5-9.
http://www.imagemagick.org/script/download.php

PROVIDED AND/OR DISCOVERED BY:
Discovered by regenrecht and reported via iDefense.

ORIGINAL ADVISORY:
ImageMagick:
http://studio.imagemagick.org/pipermail/magick-announce/2007-September/000037.html
http://www.imagemagick.org/script/changelog.php

iDefense:
1)
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=594
2)
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=595
3)
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=597
4)
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=596

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