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[libpng16] Prevent reading over-length PLTE chunk (Cosmin Truta).

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Glenn Randers-Pehrson
2015-10-30 07:57:49 -05:00
parent 06509be841
commit a901eb3ce6
7 changed files with 34 additions and 28 deletions
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11
libpng-manual.txt
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@@ -1,6 +1,6 @@
libpng-manual.txt - A description on how to use and modify libpng
libpng version 1.6.19rc02 - October 29, 2015
libpng version 1.6.19rc02 - October 30, 2015
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2015 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@ libpng-manual.txt - A description on how to use and modify libpng
Based on:
libpng versions 0.97, January 1998, through 1.6.19rc02 - October 29, 2015
libpng versions 0.97, January 1998, through 1.6.19rc02 - October 30, 2015
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2015 Glenn Randers-Pehrson
@@ -5142,10 +5142,9 @@ It can be set for testing debug or beta builds to ensure that they will compile
when the build type is switched to RC or STABLE. In essence this overrides the
PNG_LIBPNG_BUILD_BASE_TYPE definition which is not directly user controllable.
Starting with libpng-1.6.19, attempting to write an over-length PLTE chunk
Starting with libpng-1.6.19, attempting to set an over-length PLTE chunk
is an error. Previously this requirement of the PNG specification was not
enforced. Libpng continues to accept over-length PLTE chunks when reading,
but does not make any use of the extra entries.
enforced, and the palette was always limited to 256 entries.
XIII. Detecting libpng
@@ -5319,7 +5318,7 @@ Other rules can be inferred by inspecting the libpng source.
XVI. Y2K Compliance in libpng
October 29, 2015
October 30, 2015
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.