mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-11-07 23:46:13 -05:00
c12b234695
* gnu/packages/gd.scm (gd)[replacement]: New field. (gd/fixed): New variable. * gnu/packages/patches/gd-CVE-2019-6977.patch, gnu/packages/patches/gd-CVE-2019-6978.patch: New files. * gnu/local.mk (dist_patch_DATA): Add them.
301 lines
8.2 KiB
Diff
301 lines
8.2 KiB
Diff
Fix CVE-2019-6978:
|
|
|
|
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6978
|
|
|
|
Patch copied from upstream source repository:
|
|
|
|
https://github.com/libgd/libgd/commit/553702980ae89c83f2d6e254d62cf82e204956d0
|
|
|
|
From 553702980ae89c83f2d6e254d62cf82e204956d0 Mon Sep 17 00:00:00 2001
|
|
From: "Christoph M. Becker" <cmbecker69@gmx.de>
|
|
Date: Thu, 17 Jan 2019 11:54:55 +0100
|
|
Subject: [PATCH] Fix #492: Potential double-free in gdImage*Ptr()
|
|
|
|
Whenever `gdImage*Ptr()` calls `gdImage*Ctx()` and the latter fails, we
|
|
must not call `gdDPExtractData()`; otherwise a double-free would
|
|
happen. Since `gdImage*Ctx()` are void functions, and we can't change
|
|
that for BC reasons, we're introducing static helpers which are used
|
|
internally.
|
|
|
|
We're adding a regression test for `gdImageJpegPtr()`, but not for
|
|
`gdImageGifPtr()` and `gdImageWbmpPtr()` since we don't know how to
|
|
trigger failure of the respective `gdImage*Ctx()` calls.
|
|
|
|
This potential security issue has been reported by Solmaz Salimi (aka.
|
|
Rooney).
|
|
---
|
|
src/gd_gif_out.c | 18 +++++++++++++++---
|
|
src/gd_jpeg.c | 20 ++++++++++++++++----
|
|
src/gd_wbmp.c | 21 ++++++++++++++++++---
|
|
tests/jpeg/.gitignore | 1 +
|
|
tests/jpeg/CMakeLists.txt | 1 +
|
|
tests/jpeg/Makemodule.am | 3 ++-
|
|
tests/jpeg/jpeg_ptr_double_free.c | 31 +++++++++++++++++++++++++++++++
|
|
7 files changed, 84 insertions(+), 11 deletions(-)
|
|
create mode 100644 tests/jpeg/jpeg_ptr_double_free.c
|
|
|
|
diff --git a/src/gd_gif_out.c b/src/gd_gif_out.c
|
|
index 298a581..d5a9534 100644
|
|
--- a/src/gd_gif_out.c
|
|
+++ b/src/gd_gif_out.c
|
|
@@ -99,6 +99,7 @@ static void char_init(GifCtx *ctx);
|
|
static void char_out(int c, GifCtx *ctx);
|
|
static void flush_char(GifCtx *ctx);
|
|
|
|
+static int _gdImageGifCtx(gdImagePtr im, gdIOCtxPtr out);
|
|
|
|
|
|
|
|
@@ -131,8 +132,11 @@ BGD_DECLARE(void *) gdImageGifPtr(gdImagePtr im, int *size)
|
|
void *rv;
|
|
gdIOCtx *out = gdNewDynamicCtx(2048, NULL);
|
|
if (out == NULL) return NULL;
|
|
- gdImageGifCtx(im, out);
|
|
- rv = gdDPExtractData(out, size);
|
|
+ if (!_gdImageGifCtx(im, out)) {
|
|
+ rv = gdDPExtractData(out, size);
|
|
+ } else {
|
|
+ rv = NULL;
|
|
+ }
|
|
out->gd_free(out);
|
|
return rv;
|
|
}
|
|
@@ -220,6 +224,12 @@ BGD_DECLARE(void) gdImageGif(gdImagePtr im, FILE *outFile)
|
|
|
|
*/
|
|
BGD_DECLARE(void) gdImageGifCtx(gdImagePtr im, gdIOCtxPtr out)
|
|
+{
|
|
+ _gdImageGifCtx(im, out);
|
|
+}
|
|
+
|
|
+/* returns 0 on success, 1 on failure */
|
|
+static int _gdImageGifCtx(gdImagePtr im, gdIOCtxPtr out)
|
|
{
|
|
gdImagePtr pim = 0, tim = im;
|
|
int interlace, BitsPerPixel;
|
|
@@ -231,7 +241,7 @@ BGD_DECLARE(void) gdImageGifCtx(gdImagePtr im, gdIOCtxPtr out)
|
|
based temporary image. */
|
|
pim = gdImageCreatePaletteFromTrueColor(im, 1, 256);
|
|
if(!pim) {
|
|
- return;
|
|
+ return 1;
|
|
}
|
|
tim = pim;
|
|
}
|
|
@@ -247,6 +257,8 @@ BGD_DECLARE(void) gdImageGifCtx(gdImagePtr im, gdIOCtxPtr out)
|
|
/* Destroy palette based temporary image. */
|
|
gdImageDestroy( pim);
|
|
}
|
|
+
|
|
+ return 0;
|
|
}
|
|
|
|
|
|
diff --git a/src/gd_jpeg.c b/src/gd_jpeg.c
|
|
index fc05842..96ef430 100644
|
|
--- a/src/gd_jpeg.c
|
|
+++ b/src/gd_jpeg.c
|
|
@@ -117,6 +117,8 @@ static void fatal_jpeg_error(j_common_ptr cinfo)
|
|
exit(99);
|
|
}
|
|
|
|
+static int _gdImageJpegCtx(gdImagePtr im, gdIOCtx *outfile, int quality);
|
|
+
|
|
/*
|
|
* Write IM to OUTFILE as a JFIF-formatted JPEG image, using quality
|
|
* QUALITY. If QUALITY is in the range 0-100, increasing values
|
|
@@ -231,8 +233,11 @@ BGD_DECLARE(void *) gdImageJpegPtr(gdImagePtr im, int *size, int quality)
|
|
void *rv;
|
|
gdIOCtx *out = gdNewDynamicCtx(2048, NULL);
|
|
if (out == NULL) return NULL;
|
|
- gdImageJpegCtx(im, out, quality);
|
|
- rv = gdDPExtractData(out, size);
|
|
+ if (!_gdImageJpegCtx(im, out, quality)) {
|
|
+ rv = gdDPExtractData(out, size);
|
|
+ } else {
|
|
+ rv = NULL;
|
|
+ }
|
|
out->gd_free(out);
|
|
return rv;
|
|
}
|
|
@@ -253,6 +258,12 @@ void jpeg_gdIOCtx_dest(j_compress_ptr cinfo, gdIOCtx *outfile);
|
|
|
|
*/
|
|
BGD_DECLARE(void) gdImageJpegCtx(gdImagePtr im, gdIOCtx *outfile, int quality)
|
|
+{
|
|
+ _gdImageJpegCtx(im, outfile, quality);
|
|
+}
|
|
+
|
|
+/* returns 0 on success, 1 on failure */
|
|
+static int _gdImageJpegCtx(gdImagePtr im, gdIOCtx *outfile, int quality)
|
|
{
|
|
struct jpeg_compress_struct cinfo;
|
|
struct jpeg_error_mgr jerr;
|
|
@@ -287,7 +298,7 @@ BGD_DECLARE(void) gdImageJpegCtx(gdImagePtr im, gdIOCtx *outfile, int quality)
|
|
if(row) {
|
|
gdFree(row);
|
|
}
|
|
- return;
|
|
+ return 1;
|
|
}
|
|
|
|
cinfo.err->emit_message = jpeg_emit_message;
|
|
@@ -328,7 +339,7 @@ BGD_DECLARE(void) gdImageJpegCtx(gdImagePtr im, gdIOCtx *outfile, int quality)
|
|
if(row == 0) {
|
|
gd_error("gd-jpeg: error: unable to allocate JPEG row structure: gdCalloc returns NULL\n");
|
|
jpeg_destroy_compress(&cinfo);
|
|
- return;
|
|
+ return 1;
|
|
}
|
|
|
|
rowptr[0] = row;
|
|
@@ -405,6 +416,7 @@ BGD_DECLARE(void) gdImageJpegCtx(gdImagePtr im, gdIOCtx *outfile, int quality)
|
|
jpeg_finish_compress(&cinfo);
|
|
jpeg_destroy_compress(&cinfo);
|
|
gdFree(row);
|
|
+ return 0;
|
|
}
|
|
|
|
|
|
diff --git a/src/gd_wbmp.c b/src/gd_wbmp.c
|
|
index f19a1c9..a49bdbe 100644
|
|
--- a/src/gd_wbmp.c
|
|
+++ b/src/gd_wbmp.c
|
|
@@ -88,6 +88,8 @@ int gd_getin(void *in)
|
|
return (gdGetC((gdIOCtx *)in));
|
|
}
|
|
|
|
+static int _gdImageWBMPCtx(gdImagePtr image, int fg, gdIOCtx *out);
|
|
+
|
|
/*
|
|
Function: gdImageWBMPCtx
|
|
|
|
@@ -100,6 +102,12 @@ int gd_getin(void *in)
|
|
out - the stream where to write
|
|
*/
|
|
BGD_DECLARE(void) gdImageWBMPCtx(gdImagePtr image, int fg, gdIOCtx *out)
|
|
+{
|
|
+ _gdImageWBMPCtx(image, fg, out);
|
|
+}
|
|
+
|
|
+/* returns 0 on success, 1 on failure */
|
|
+static int _gdImageWBMPCtx(gdImagePtr image, int fg, gdIOCtx *out)
|
|
{
|
|
int x, y, pos;
|
|
Wbmp *wbmp;
|
|
@@ -107,7 +115,7 @@ BGD_DECLARE(void) gdImageWBMPCtx(gdImagePtr image, int fg, gdIOCtx *out)
|
|
/* create the WBMP */
|
|
if((wbmp = createwbmp(gdImageSX(image), gdImageSY(image), WBMP_WHITE)) == NULL) {
|
|
gd_error("Could not create WBMP\n");
|
|
- return;
|
|
+ return 1;
|
|
}
|
|
|
|
/* fill up the WBMP structure */
|
|
@@ -123,11 +131,15 @@ BGD_DECLARE(void) gdImageWBMPCtx(gdImagePtr image, int fg, gdIOCtx *out)
|
|
|
|
/* write the WBMP to a gd file descriptor */
|
|
if(writewbmp(wbmp, &gd_putout, out)) {
|
|
+ freewbmp(wbmp);
|
|
gd_error("Could not save WBMP\n");
|
|
+ return 1;
|
|
}
|
|
|
|
/* des submitted this bugfix: gdFree the memory. */
|
|
freewbmp(wbmp);
|
|
+
|
|
+ return 0;
|
|
}
|
|
|
|
/*
|
|
@@ -271,8 +283,11 @@ BGD_DECLARE(void *) gdImageWBMPPtr(gdImagePtr im, int *size, int fg)
|
|
void *rv;
|
|
gdIOCtx *out = gdNewDynamicCtx(2048, NULL);
|
|
if (out == NULL) return NULL;
|
|
- gdImageWBMPCtx(im, fg, out);
|
|
- rv = gdDPExtractData(out, size);
|
|
+ if (!_gdImageWBMPCtx(im, fg, out)) {
|
|
+ rv = gdDPExtractData(out, size);
|
|
+ } else {
|
|
+ rv = NULL;
|
|
+ }
|
|
out->gd_free(out);
|
|
return rv;
|
|
}
|
|
#diff --git a/tests/jpeg/.gitignore b/tests/jpeg/.gitignore
|
|
#index c28aa87..13bcf04 100644
|
|
#--- a/tests/jpeg/.gitignore
|
|
#+++ b/tests/jpeg/.gitignore
|
|
#@@ -3,5 +3,6 @@
|
|
# /jpeg_empty_file
|
|
# /jpeg_im2im
|
|
# /jpeg_null
|
|
#+/jpeg_ptr_double_free
|
|
# /jpeg_read
|
|
# /jpeg_resolution
|
|
diff --git a/tests/jpeg/CMakeLists.txt b/tests/jpeg/CMakeLists.txt
|
|
index 19964b0..a8d8162 100644
|
|
--- a/tests/jpeg/CMakeLists.txt
|
|
+++ b/tests/jpeg/CMakeLists.txt
|
|
@@ -2,6 +2,7 @@ IF(JPEG_FOUND)
|
|
LIST(APPEND TESTS_FILES
|
|
jpeg_empty_file
|
|
jpeg_im2im
|
|
+ jpeg_ptr_double_free
|
|
jpeg_null
|
|
)
|
|
|
|
diff --git a/tests/jpeg/Makemodule.am b/tests/jpeg/Makemodule.am
|
|
index 7e5d317..b89e169 100644
|
|
--- a/tests/jpeg/Makemodule.am
|
|
+++ b/tests/jpeg/Makemodule.am
|
|
@@ -2,7 +2,8 @@ if HAVE_LIBJPEG
|
|
libgd_test_programs += \
|
|
jpeg/jpeg_empty_file \
|
|
jpeg/jpeg_im2im \
|
|
- jpeg/jpeg_null
|
|
+ jpeg/jpeg_null \
|
|
+ jpeg/jpeg_ptr_double_free
|
|
|
|
if HAVE_LIBPNG
|
|
libgd_test_programs += \
|
|
diff --git a/tests/jpeg/jpeg_ptr_double_free.c b/tests/jpeg/jpeg_ptr_double_free.c
|
|
new file mode 100644
|
|
index 0000000..df5a510
|
|
--- /dev/null
|
|
+++ b/tests/jpeg/jpeg_ptr_double_free.c
|
|
@@ -0,0 +1,31 @@
|
|
+/**
|
|
+ * Test that failure to convert to JPEG returns NULL
|
|
+ *
|
|
+ * We are creating an image, set its width to zero, and pass this image to
|
|
+ * `gdImageJpegPtr()` which is supposed to fail, and as such should return NULL.
|
|
+ *
|
|
+ * See also <https://github.com/libgd/libgd/issues/381>
|
|
+ */
|
|
+
|
|
+
|
|
+#include "gd.h"
|
|
+#include "gdtest.h"
|
|
+
|
|
+
|
|
+int main()
|
|
+{
|
|
+ gdImagePtr src, dst;
|
|
+ int size;
|
|
+
|
|
+ src = gdImageCreateTrueColor(1, 10);
|
|
+ gdTestAssert(src != NULL);
|
|
+
|
|
+ src->sx = 0; /* this hack forces gdImageJpegPtr() to fail */
|
|
+
|
|
+ dst = gdImageJpegPtr(src, &size, 0);
|
|
+ gdTestAssert(dst == NULL);
|
|
+
|
|
+ gdImageDestroy(src);
|
|
+
|
|
+ return gdNumFailures();
|
|
+}
|
|
--
|
|
2.20.1
|
|
|