gnu: jbig2dec: Fix CVE-2017-{7885,7975,7976}.
* gnu/packages/patches/jbig2dec-CVE-2017-7885.patch, gnu/packages/patches/jbig2dec-CVE-2017-7975.patch, gnu/packages/patches/jbig2dec-CVE-2017-7976.patch: New files. * gnu/local.mk (dist_patch_DATA): Add them. * gnu/packages/image.scm (jbig2dec)[source]: Use them.master
Leo Famulari
parent
fefd4c197f
commit
10cb88f85c
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@ -689,6 +689,9 @@ dist_patch_DATA = \
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%D%/packages/patches/jasper-CVE-2017-6850.patch \
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%D%/packages/patches/jbig2dec-ignore-testtest.patch \
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%D%/packages/patches/jbig2dec-CVE-2016-9601.patch \
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%D%/packages/patches/jbig2dec-CVE-2017-7885.patch \
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%D%/packages/patches/jbig2dec-CVE-2017-7975.patch \
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%D%/packages/patches/jbig2dec-CVE-2017-7976.patch \
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%D%/packages/patches/jq-CVE-2015-8863.patch \
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%D%/packages/patches/kdbusaddons-kinit-file-name.patch \
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%D%/packages/patches/khmer-use-libraries.patch \
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@ -509,7 +509,10 @@ arithmetic ops.")
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(sha256
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(base32 "04akiwab8iy5iy34razcvh9mcja9wy737civ3sbjxk4j143s1b2s"))
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(patches (search-patches "jbig2dec-ignore-testtest.patch"
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"jbig2dec-CVE-2016-9601.patch"))))
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"jbig2dec-CVE-2016-9601.patch"
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"jbig2dec-CVE-2017-7885.patch"
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"jbig2dec-CVE-2017-7975.patch"
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"jbig2dec-CVE-2017-7976.patch"))))
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(build-system gnu-build-system)
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(synopsis "Decoder of the JBIG2 image compression format")
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@ -0,0 +1,38 @@
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Fix CVE-2017-7885:
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https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7885
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https://bugs.ghostscript.com/show_bug.cgi?id=697703
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Patch copied from upstream source repository:
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https://git.ghostscript.com/?p=jbig2dec.git;a=commit;h=258290340bb657c9efb44457f717b0d8b49f4aa3
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From 258290340bb657c9efb44457f717b0d8b49f4aa3 Mon Sep 17 00:00:00 2001
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From: Shailesh Mistry <shailesh.mistry@hotmail.co.uk>
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Date: Wed, 3 May 2017 22:06:01 +0100
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Subject: [PATCH] Bug 697703: Prevent integer overflow vulnerability.
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Add extra check for the offset being greater than the size
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of the image and hence reading off the end of the buffer.
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Thank you to Dai Ge for finding this issue and suggesting a patch.
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---
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jbig2_symbol_dict.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/jbig2_symbol_dict.c b/jbig2_symbol_dict.c
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index 4acaba9..36225cb 100644
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--- a/jbig2_symbol_dict.c
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+++ b/jbig2_symbol_dict.c
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@@ -629,7 +629,7 @@ jbig2_decode_symbol_dict(Jbig2Ctx *ctx,
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byte *dst = image->data;
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/* SumatraPDF: prevent read access violation */
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- if (size - jbig2_huffman_offset(hs) < image->height * stride) {
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+ if ((size - jbig2_huffman_offset(hs) < image->height * stride) || (size < jbig2_huffman_offset(hs))) {
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jbig2_error(ctx, JBIG2_SEVERITY_FATAL, segment->number, "not enough data for decoding (%d/%d)", image->height * stride,
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size - jbig2_huffman_offset(hs));
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jbig2_image_release(ctx, image);
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--
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2.13.0
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@ -0,0 +1,40 @@
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Fix CVE-2017-7975:
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https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7975
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https://bugs.ghostscript.com/show_bug.cgi?id=697693
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Patch copied from upstream source repository:
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https://git.ghostscript.com/?p=jbig2dec.git;a=commit;h=f8992b8fe65c170c8624226f127c5c4bfed42c66
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From f8992b8fe65c170c8624226f127c5c4bfed42c66 Mon Sep 17 00:00:00 2001
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From: Shailesh Mistry <shailesh.mistry@hotmail.co.uk>
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Date: Wed, 26 Apr 2017 22:12:14 +0100
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Subject: [PATCH] Bug 697693: Prevent SEGV due to integer overflow.
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While building a Huffman table, the start and end points were susceptible
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to integer overflow.
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Thank you to Jiaqi for finding this issue and suggesting a patch.
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---
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jbig2_huffman.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/jbig2_huffman.c b/jbig2_huffman.c
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index 511e461..b4189a1 100644
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--- a/jbig2_huffman.c
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+++ b/jbig2_huffman.c
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@@ -421,8 +421,8 @@ jbig2_build_huffman_table(Jbig2Ctx *ctx, const Jbig2HuffmanParams *params)
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if (PREFLEN == CURLEN) {
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int RANGELEN = lines[CURTEMP].RANGELEN;
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- int start_j = CURCODE << shift;
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- int end_j = (CURCODE + 1) << shift;
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+ uint32_t start_j = CURCODE << shift;
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+ uint32_t end_j = (CURCODE + 1) << shift;
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byte eflags = 0;
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if (end_j > max_j) {
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--
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2.13.0
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@ -0,0 +1,122 @@
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Fix CVE-2017-7976:
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https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7976
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https://bugs.ghostscript.com/show_bug.cgi?id=697683
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In order to make the bug-fix patch apply, we also include an earlier commit
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that it depends on.
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Patches copied from upstream source repository:
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Earlier commit, creating context for the CVE fix:
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https://git.ghostscript.com/?p=jbig2dec.git;a=commit;h=9d2c4f3bdb0bd003deae788e7187c0f86e624544
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CVE-2017-7976 bug fix:
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https://git.ghostscript.com/?p=jbig2dec.git;a=commit;h=cfa054925de49675ac5445515ebf036fa9379ac6
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From 9d2c4f3bdb0bd003deae788e7187c0f86e624544 Mon Sep 17 00:00:00 2001
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From: Tor Andersson <tor.andersson@artifex.com>
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Date: Wed, 14 Dec 2016 15:56:31 +0100
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Subject: [PATCH] Fix warnings: remove unsigned < 0 tests that are always
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false.
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---
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jbig2_image.c | 2 +-
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jbig2_mmr.c | 2 +-
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jbig2_symbol_dict.c | 9 ++-------
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3 files changed, 4 insertions(+), 9 deletions(-)
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diff --git a/jbig2_image.c b/jbig2_image.c
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index 94e5a4c..00f966b 100644
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--- a/jbig2_image.c
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+++ b/jbig2_image.c
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@@ -256,7 +256,7 @@ jbig2_image_compose(Jbig2Ctx *ctx, Jbig2Image *dst, Jbig2Image *src, int x, int
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/* general OR case */
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s = ss;
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d = dd = dst->data + y * dst->stride + leftbyte;
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- if (d < dst->data || leftbyte > dst->stride || h * dst->stride < 0 || d - leftbyte + h * dst->stride > dst->data + dst->height * dst->stride) {
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+ if (d < dst->data || leftbyte > dst->stride || d - leftbyte + h * dst->stride > dst->data + dst->height * dst->stride) {
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return jbig2_error(ctx, JBIG2_SEVERITY_FATAL, -1, "preventing heap overflow in jbig2_image_compose");
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}
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if (leftbyte == rightbyte) {
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diff --git a/jbig2_mmr.c b/jbig2_mmr.c
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index 390e27c..da54934 100644
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--- a/jbig2_mmr.c
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+++ b/jbig2_mmr.c
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@@ -977,7 +977,7 @@ jbig2_decode_mmr_line(Jbig2MmrCtx *mmr, const byte *ref, byte *dst)
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if (b1 < 2)
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break;
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if (c) {
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- if (b1 - 2 < a0 || a0 < 0)
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+ if (a0 == MINUS1 || b1 - 2 < a0)
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return -1;
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jbig2_set_bits(dst, a0, b1 - 2);
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}
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diff --git a/jbig2_symbol_dict.c b/jbig2_symbol_dict.c
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index 11a2252..4acaba9 100644
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--- a/jbig2_symbol_dict.c
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+++ b/jbig2_symbol_dict.c
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@@ -92,11 +92,6 @@ jbig2_sd_new(Jbig2Ctx *ctx, uint32_t n_symbols)
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{
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Jbig2SymbolDict *new_dict = NULL;
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- if (n_symbols < 0) {
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- jbig2_error(ctx, JBIG2_SEVERITY_FATAL, -1, "Negative number of symbols in symbol dict: %d", n_symbols);
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- return NULL;
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- }
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-
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new_dict = jbig2_new(ctx, Jbig2SymbolDict, 1);
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if (new_dict != NULL) {
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new_dict->glyphs = jbig2_new(ctx, Jbig2Image *, n_symbols);
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@@ -613,7 +608,7 @@ jbig2_decode_symbol_dict(Jbig2Ctx *ctx,
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uint32_t j;
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int x;
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- if (code || (BMSIZE < 0)) {
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+ if (code) {
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jbig2_error(ctx, JBIG2_SEVERITY_FATAL, segment->number, "error decoding size of collective bitmap!");
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goto cleanup4;
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}
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@@ -716,7 +711,7 @@ jbig2_decode_symbol_dict(Jbig2Ctx *ctx,
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code = jbig2_arith_int_decode(IAEX, as, (int32_t *)&exrunlength);
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/* prevent infinite loop */
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zerolength = exrunlength > 0 ? 0 : zerolength + 1;
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- if (code || (exrunlength > limit - i) || (exrunlength < 0) || (zerolength > 4) || (exflag && (exrunlength + j > params->SDNUMEXSYMS))) {
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+ if (code || (exrunlength > limit - i) || (zerolength > 4) || (exflag && (exrunlength + j > params->SDNUMEXSYMS))) {
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if (code)
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jbig2_error(ctx, JBIG2_SEVERITY_FATAL, segment->number, "failed to decode exrunlength for exported symbols");
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else if (exrunlength <= 0)
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--
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2.13.0
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From cfa054925de49675ac5445515ebf036fa9379ac6 Mon Sep 17 00:00:00 2001
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From: Shailesh Mistry <shailesh.mistry@hotmail.co.uk>
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Date: Wed, 10 May 2017 17:50:39 +0100
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Subject: [PATCH] Bug 697683: Bounds check before reading from image source
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data.
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Add extra check to prevent reading off the end of the image source
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data buffer.
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Thank you to Dai Ge for finding this issue and suggesting a patch.
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---
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jbig2_image.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/jbig2_image.c b/jbig2_image.c
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index 661d0a5..ae161b9 100644
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--- a/jbig2_image.c
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+++ b/jbig2_image.c
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@@ -263,7 +263,8 @@ jbig2_image_compose(Jbig2Ctx *ctx, Jbig2Image *dst, Jbig2Image *src, int x, int
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/* general OR case */
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s = ss;
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d = dd = dst->data + y * dst->stride + leftbyte;
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- if (d < dst->data || leftbyte > dst->stride || d - leftbyte + h * dst->stride > dst->data + dst->height * dst->stride) {
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+ if (d < dst->data || leftbyte > dst->stride || d - leftbyte + h * dst->stride > dst->data + dst->height * dst->stride ||
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+ s - leftbyte + (h - 1) * src->stride + rightbyte > src->data + src->height * src->stride) {
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return jbig2_error(ctx, JBIG2_SEVERITY_FATAL, -1, "preventing heap overflow in jbig2_image_compose");
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}
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if (leftbyte == rightbyte) {
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--
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2.13.0
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