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[libpng12] Fixed an out-of-range read in png_check_keyword() (Bug report from 

Qixue Xiao).
This commit is contained in:
Glenn Randers-Pehrson 2015-12-09 09:33:54 -06:00
parent 623e09d8c5
commit 520b373ee5
3 changed files with 27 additions and 27 deletions
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44
ANNOUNCE
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@ -1,51 +1,47 @@
Libpng 1.2.55 - December 3, 2015
Libpng 1.2.56beta01 - December 9, 2015
This is a public release of libpng, intended for use in production codes.
This is not intended to be a public release. It will be replaced
within a few weeks by a public version or by another test version.
Files available for download:
Source files with LF line endings (for Unix/Linux) and with a
"configure" script
libpng-1.2.55.tar.xz (LZMA-compressed, recommended)
libpng-1.2.55.tar.gz
libpng-1.2.56beta01.tar.xz (LZMA-compressed, recommended)
libpng-1.2.56beta01.tar.gz
Source files with LF line endings (for Unix/Linux) without the
"configure" script
libpng-1.2.55-no-config.tar.xz (LZMA-compressed, recommended)
libpng-1.2.55-no-config.tar.gz
libpng-1.2.56beta01-no-config.tar.xz (LZMA-compressed, recommended)
libpng-1.2.56beta01-no-config.tar.gz
Source files with CRLF line endings (for Windows), without the
"configure" script
lpng1255.zip
lpng1255.7z
lp1256b01.zip
lp1256b01.7z
Project files
libpng-1.2.55-project-netware.zip
libpng-1.2.55-project-wince.zip
libpng-1.2.56beta01-project-netware.zip
libpng-1.2.56beta01-project-wince.zip
Other information:
libpng-1.2.55-README.txt
libpng-1.2.55-KNOWNBUGS.txt
libpng-1.2.55-LICENSE.txt
libpng-1.2.55-Y2K-compliance.txt
libpng-1.2.55-[previous version]-diff.txt
libpng-1.2.55-*.asc (armored detached GPG signatures)
libpng-1.2.56beta01-README.txt
libpng-1.2.56beta01-KNOWNBUGS.txt
libpng-1.2.56beta01-LICENSE.txt
libpng-1.2.56beta01-Y2K-compliance.txt
libpng-1.2.56beta01-[previous version]-diff.txt
libpng-1.2.56beta01-*.asc (armored detached GPG signatures)
Changes since the last public release (1.2.54):
Changes since the last public release (1.2.55):
Avoid potential pointer overflow in png_handle_iTXt(), png_handle_zTXt(),
png_handle_sPLT(), and png_handle_pCAL() (Bug report by John Regehr).
Fixed incorrect implementation of png_set_PLTE() that uses png_ptr
not info_ptr, that left png_set_PLTE() open to the CVE-2015-8126
vulnerability.
Discontinued distributing tar.bz2 archives.
Discontinued distributing libpng-oldversion-newversion-diff.txt
Fixed an out-of-range read in png_check_keyword() (Bug report from
Qixue Xiao).
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit

8
CHANGES
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@ -2901,14 +2901,18 @@ version 1.2.55beta01 [November 20, 2015]
version 1.2.55beta02 [November 23, 2015]
Fixed incorrect implementation of png_set_PLTE() that uses png_ptr
not info_ptr, that left png_set_PLTE() open to the CVE-2015-8126
vulnerability.
vulnerability. Fixes CVE-2015-8472.
version 1.2.55rc01 [November 26, 2015]
Discontinued distributing tar.bz2 archives.
version 1.2.55 and 1.0.65 [December 3, 2015]
version 1.2.55 and 1.0.65 [December 6, 2015]
Discontinued distributing libpng-oldversion-newversion-diff.txt
version 1.2.56beta01 [December 9, 2015]
Fixed an out-of-range read in png_check_keyword() (Bug report from
Qixue Xiao).
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit
https://lists.sourceforge.net/lists/listinfo/png-mng-implement

2
pngwutil.c
View File

@ -1285,7 +1285,7 @@ png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key)
{
png_warning(png_ptr, "trailing spaces removed from keyword");
while (*kp == ' ')
while (key_len && *kp == ' ')
{
*(kp--) = '\0';
key_len--;