From dc66a2a10c3bc0e1491ddd656eff10bac521d862 Mon Sep 17 00:00:00 2001 From: Trevor Gamblin Date: Thu, 3 Oct 2019 14:58:51 -0400 Subject: gd: fix CVE-2019-6978 CVE: CVE-2019-6978 Signed-off-by: Trevor Gamblin Signed-off-by: Khem Raj Signed-off-by: Armin Kuster --- meta-oe/recipes-support/gd/gd/CVE-2019-6978.patch | 299 ++++++++++++++++++++++ meta-oe/recipes-support/gd/gd_2.2.5.bb | 1 + 2 files changed, 300 insertions(+) create mode 100644 meta-oe/recipes-support/gd/gd/CVE-2019-6978.patch diff --git a/meta-oe/recipes-support/gd/gd/CVE-2019-6978.patch b/meta-oe/recipes-support/gd/gd/CVE-2019-6978.patch new file mode 100644 index 0000000000..9beb23e834 --- /dev/null +++ b/meta-oe/recipes-support/gd/gd/CVE-2019-6978.patch @@ -0,0 +1,299 @@ +From 553702980ae89c83f2d6e254d62cf82e204956d0 Mon Sep 17 00:00:00 2001 +From: "Christoph M. Becker" +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 + +Upstream-Status: Backport [https://github.com/libgd/libgd/commit/553702980ae89c83f2d6e254d62cf82e204956d0] +CVE: CVE-2019-6978 + +Signed-off-by: Trevor Gamblin + + +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 ++ */ ++ ++ ++#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(); ++} +-- +2.17.1 + diff --git a/meta-oe/recipes-support/gd/gd_2.2.5.bb b/meta-oe/recipes-support/gd/gd_2.2.5.bb index c846bda6b0..35f9bb2516 100644 --- a/meta-oe/recipes-support/gd/gd_2.2.5.bb +++ b/meta-oe/recipes-support/gd/gd_2.2.5.bb @@ -16,6 +16,7 @@ DEPENDS = "freetype libpng jpeg zlib tiff" SRC_URI = "git://github.com/libgd/libgd.git;branch=GD-2.2 \ file://0001-annotate.c-gdft.c-Replace-strncpy-with-memccpy-to-fi.patch \ file://CVE-2018-1000222.patch \ + file://CVE-2019-6978.patch \ " SRCREV = "8255231b68889597d04d451a72438ab92a405aba" -- cgit 1.2.3-korg