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Bug #11784 read_exif_data fails on big thumbnails
Submitted: 2001-06-28 13:13 UTC Modified: 2005-02-01 22:52 UTC
From: kjarri at theriak dot is Assigned:
Status: Closed Package: EXIF related
PHP Version: 4.0.6 OS: Linux
Private report: No CVE-ID: None
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From: kjarri at theriak dot is
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 [2001-06-28 13:13 UTC] kjarri at theriak dot is
I'm having problem reading exif data from pictures produced by Fujifilm FinePix6800 ZOOM. While reading exif data from the jpegs i get fatal error in PHP complaining about illegal thumbnailsize.

After reading the source for the exif module i saw a notice that mentioned that thumbnails embedded in the exif header are not allowed to exceed 64k in size. Now i'm not sure about the specification of the picture in question, the embedded thumbnail might exceed this limit, but a sample picture that produces the error can be downloaded from http://is-mirror.kjarri.net/files/DSCF0085.JPG (around 500k in size).

It would be nice if the read_exif_data() function could handle images like this and return all other data that is correct according to the EXIF specification instead of failing completely.


My PHP setup:
./configure 
--x-libraries=/usr/X11/lib/ 
--x-includes=/usr/X11/include/ 
--with-mysql=/superstore/progs/mysql/ 
--with-apxs=/superstore/progs/apache/bin/apxs 
--enable-trans-sid 
--with-pgsql=/superstore/progs/pgsql/ 
--with-interbase=/superstore/progs/interbase/ 
--enable-ftp 
--enable-exif 
--with-gd=/usr/local/
--with-ttf=/usr/local/
--enable-gd-imgstrttf 
--with-xpm-dir=/usr/local/ 
--with-jpeg-dir=/usr/local/ 
--with-sybase=/usr/local/freetds 
--with-png-dir=/usr/local/ 
--with-zip 
--with-zziplib=/usr/local/ 
--with-zlib-dir=/usr/local/

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 [2001-08-03 21:53 UTC] sniper@php.net
Fixed in CVS. If thumbnail is invalid, a warning is produced
but all the other data is still returned.

--Jani

 
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