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- security update:

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* CVE-2016-6905 [bsc#995034]
    + gd-CVE-2016-6905.patch

OBS-URL: https://build.opensuse.org/package/show/graphics/gd?expand=0&rev=28
This commit is contained in:
Petr Gajdos 2016-08-23 11:25:39 +00:00 committed by Git OBS Bridge
parent 9e341b15e9
commit e66bc8525e
3 changed files with 74 additions and 0 deletions
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65
gd-CVE-2016-6905.patch Normal file
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@ -0,0 +1,65 @@
From 3c2b605d72e8b080dace1d98a6e50b46c1d12186 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ond=C5=99ej=20Sur=C3=BD?= <ondrej@sury.org>
Date: Tue, 12 Jul 2016 14:20:16 +0200
Subject: [PATCH] bug #248, fix Out-Of-Bounds Read in read_image_tga
---
src/gd_tga.c | 34 ++++++++++++++++++++++++++--------
1 file changed, 26 insertions(+), 8 deletions(-)
Index: libgd-2.1.1/src/gd_tga.c
===================================================================
--- libgd-2.1.1.orig/src/gd_tga.c 2015-01-06 10:16:03.000000000 +0100
+++ libgd-2.1.1/src/gd_tga.c 2016-08-23 13:15:45.975724158 +0200
@@ -200,7 +200,6 @@ int read_image_tga( gdIOCtx *ctx, oTga *
int buffer_caret = 0;
int bitmap_caret = 0;
int i = 0;
- int j = 0;
uint8_t encoded_pixels;
if(overflow2(tga->width, tga->height)) {
@@ -287,25 +286,34 @@ int read_image_tga( gdIOCtx *ctx, oTga *
while( bitmap_caret < image_block_size ) {
if ((decompression_buffer[buffer_caret] & TGA_RLE_FLAG) == TGA_RLE_FLAG) {
- encoded_pixels = ( ( decompression_buffer[ buffer_caret ] & 127 ) + 1 );
+ encoded_pixels = ( ( decompression_buffer[ buffer_caret ] & !TGA_RLE_FLAG ) + 1 );
buffer_caret++;
+ if ((bitmap_caret + (encoded_pixels * pixel_block_size)) >= image_block_size) {
+ gdFree( decompression_buffer );
+ gdFree( conversion_buffer );
+ return -1;
+ }
+
for (i = 0; i < encoded_pixels; i++) {
- for (j = 0; j < pixel_block_size; j++, bitmap_caret++) {
- tga->bitmap[ bitmap_caret ] = decompression_buffer[ buffer_caret + j ];
- }
+ memcpy(tga->bitmap + bitmap_caret, decompression_buffer + buffer_caret, pixel_block_size);
+ bitmap_caret += pixel_block_size;
}
buffer_caret += pixel_block_size;
+
} else {
encoded_pixels = decompression_buffer[ buffer_caret ] + 1;
buffer_caret++;
- for (i = 0; i < encoded_pixels; i++) {
- for( j = 0; j < pixel_block_size; j++, bitmap_caret++ ) {
- tga->bitmap[ bitmap_caret ] = decompression_buffer[ buffer_caret + j ];
- }
- buffer_caret += pixel_block_size;
+ if ((bitmap_caret + (encoded_pixels * pixel_block_size)) >= image_block_size) {
+ gdFree( decompression_buffer );
+ gdFree( conversion_buffer );
+ return -1;
}
+
+ memcpy(tga->bitmap + bitmap_caret, decompression_buffer + buffer_caret, encoded_pixels * pixel_block_size);
+ bitmap_caret += (encoded_pixels * pixel_block_size);
+ buffer_caret += (encoded_pixels * pixel_block_size);
}
}

7
gd.changes
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@ -1,3 +1,10 @@
-------------------------------------------------------------------
Tue Aug 23 11:16:25 UTC 2016 - pgajdos@suse.com
- security update:
* CVE-2016-6905 [bsc#995034]
+ gd-CVE-2016-6905.patch
-------------------------------------------------------------------
Mon May 30 13:17:18 UTC 2016 - pgajdos@suse.com

2
gd.spec
View File

@ -41,6 +41,7 @@ Patch3: gd-aliasing.patch
# could be upstreamed
Patch4: gd-libvpx.patch
Patch5: gd-CVE-2016-5116.patch
Patch6: gd-CVE-2016-6905.patch
BuildRequires: fontconfig-devel
BuildRequires: freetype2-devel
BuildRequires: libjpeg-devel
@ -98,6 +99,7 @@ the formats accepted for inline images by most browsers.
%patch3
%patch4
%patch5 -p1
%patch6 -p1
%build
# this file is errorneously forgotten from the tarball