diff options
| author | Remi Collet <remi@remirepo.net> | 2018-03-01 10:08:47 +0100 |
|---|---|---|
| committer | Remi Collet <remi@remirepo.net> | 2018-03-01 10:08:47 +0100 |
| commit | 6a75ec7b86fc3f19b758a0e6525e9df7eb87a9f9 (patch) | |
| tree | 3063e2862ede5cb869233359d021731e3b156e90 /bug75571.patch | |
| parent | f6bab89b5b2345cac08d761e2fd93f7d18da8aea (diff) | |
fix #73549: Use after free when stream is passed to imagepng
fix #73868: Fix DOS vulnerability in gdImageCreateFromGd2Ctx() CVE-2016-10167
fix #73869: Signed Integer Overflow gd_io.c CVE-2016-10168
fix #74435: Buffer over-read into uninitialized memory CVE-2017-7890
fix #75571: Potential infinite loop in gdImageCreateFromGifCtx CVE-2018-5711
fix #75981: stack-buffer-overflow while parsing HTTP response
Diffstat (limited to 'bug75571.patch')
| -rw-r--r-- | bug75571.patch | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/bug75571.patch b/bug75571.patch new file mode 100644 index 0000000..d35ca3a --- /dev/null +++ b/bug75571.patch @@ -0,0 +1,58 @@ +Backported for 5.4 without test and binary patch + +From 8d6e9588671136837533fe3785657c31c5b52767 Mon Sep 17 00:00:00 2001 +From: "Christoph M. Becker" <cmbecker69@gmx.de> +Date: Wed, 29 Nov 2017 18:52:33 +0100 +Subject: [PATCH] Fixed bug #75571: Potential infinite loop in + gdImageCreateFromGifCtx + +Due to a signedness confusion in `GetCode_` a corrupt GIF file can +trigger an infinite loop. Furthermore we make sure that a GIF without +any palette entries is treated as invalid *after* open palette entries +have been removed. +--- + ext/gd/libgd/gd_gif_in.c | 10 +++++----- + ext/gd/tests/bug75571.gif | Bin 0 -> 1731 bytes + ext/gd/tests/bug75571.phpt | 15 +++++++++++++++ + 3 files changed, 20 insertions(+), 5 deletions(-) + create mode 100644 ext/gd/tests/bug75571.gif + create mode 100644 ext/gd/tests/bug75571.phpt + +diff --git a/ext/gd/libgd/gd_gif_in.c b/ext/gd/libgd/gd_gif_in.c +index e0f0fe3..16776d3 100644 +--- a/ext/gd/libgd/gd_gif_in.c ++++ b/ext/gd/libgd/gd_gif_in.c +@@ -261,10 +261,6 @@ terminated: + if (!im) { + return 0; + } +- if (!im->colorsTotal) { +- gdImageDestroy(im); +- return 0; +- } + /* Check for open colors at the end, so + we can reduce colorsTotal and ultimately + BitsPerPixel */ +@@ -275,6 +271,10 @@ terminated: + break; + } + } ++ if (!im->colorsTotal) { ++ gdImageDestroy(im); ++ return 0; ++ } + return im; + } + /* }}} */ +@@ -375,7 +375,7 @@ static int + GetCode_(gdIOCtx *fd, CODE_STATIC_DATA *scd, int code_size, int flag, int *ZeroDataBlockP) + { + int i, j, ret; +- unsigned char count; ++ int count; + + if (flag) { + scd->curbit = 0; +-- +2.1.4 + |