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author | Catalin Enache <catalin.enache@windriver.com> | 2017-05-08 16:42:59 +0300 |
---|---|---|
committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2017-06-05 23:30:21 +0100 |
commit | 31e9be198160dbeb3d6ab10a3324457f9e502537 (patch) | |
tree | 796fc57a809ad78d0c86d69512edee6b8b491180 /meta/recipes-extended/ghostscript/ghostscript/CVE-2017-7975.patch | |
parent | 829e2027b6c7f4f2d6fa03e158bfe371b7848919 (diff) | |
download | poky-31e9be198160dbeb3d6ab10a3324457f9e502537.tar.gz |
ghostscript: CVE-2016-8602, CVE-2017-7975
The .sethalftone5 function in psi/zht2.c in Ghostscript before 9.21 allows remote
attackers to cause a denial of service (application crash) or possibly execute
arbitrary code via a crafted Postscript document that calls .sethalftone5 with an
empty operand stack.
Artifex jbig2dec 0.13, as used in Ghostscript, allows out-of-bounds writes because
of an integer overflow in the jbig2_build_huffman_table function in jbig2_huffman.c
during operations on a crafted JBIG2 file, leading to a denial of service (application
crash) or possibly execution of arbitrary code.
References:
https://nvd.nist.gov/vuln/detail/CVE-2016-8602
https://nvd.nist.gov/vuln/detail/CVE-2017-7975
Upstream patches:
http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=f5c7555c303
http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=5e57e483298
(From OE-Core rev: 8f919c2df47ca93132f21160d919b6ee2207d9a6)
(From OE-Core rev: 6040b8735b79397bf49a2154f81e9aab34c15413)
Signed-off-by: Catalin Enache <catalin.enache@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/recipes-extended/ghostscript/ghostscript/CVE-2017-7975.patch')
-rw-r--r-- | meta/recipes-extended/ghostscript/ghostscript/CVE-2017-7975.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/meta/recipes-extended/ghostscript/ghostscript/CVE-2017-7975.patch b/meta/recipes-extended/ghostscript/ghostscript/CVE-2017-7975.patch new file mode 100644 index 0000000000..d0886c9120 --- /dev/null +++ b/meta/recipes-extended/ghostscript/ghostscript/CVE-2017-7975.patch | |||
@@ -0,0 +1,36 @@ | |||
1 | From 5e57e483298dae8b8d4ec9aab37a526736ac2e97 Mon Sep 17 00:00:00 2001 | ||
2 | From: Shailesh Mistry <shailesh.mistry@hotmail.co.uk> | ||
3 | Date: Wed, 26 Apr 2017 22:12:14 +0100 | ||
4 | Subject: [PATCH] Bug 697693: Prevent SEGV due to integer overflow. | ||
5 | |||
6 | While building a Huffman table, the start and end points were susceptible | ||
7 | to integer overflow. | ||
8 | |||
9 | Thank you to Jiaqi for finding this issue and suggesting a patch. | ||
10 | |||
11 | Upstream-Status: Backport | ||
12 | CVE: CVE-2017-7975 | ||
13 | |||
14 | Signed-off-by: Catalin Enache <catalin.enache@windriver.com> | ||
15 | --- | ||
16 | jbig2dec/jbig2_huffman.c | 4 ++-- | ||
17 | 1 file changed, 2 insertions(+), 2 deletions(-) | ||
18 | |||
19 | diff --git a/jbig2dec/jbig2_huffman.c b/jbig2dec/jbig2_huffman.c | ||
20 | index 511e461..b4189a1 100644 | ||
21 | --- a/jbig2dec/jbig2_huffman.c | ||
22 | +++ b/jbig2dec/jbig2_huffman.c | ||
23 | @@ -421,8 +421,8 @@ jbig2_build_huffman_table(Jbig2Ctx *ctx, const Jbig2HuffmanParams *params) | ||
24 | |||
25 | if (PREFLEN == CURLEN) { | ||
26 | int RANGELEN = lines[CURTEMP].RANGELEN; | ||
27 | - int start_j = CURCODE << shift; | ||
28 | - int end_j = (CURCODE + 1) << shift; | ||
29 | + uint32_t start_j = CURCODE << shift; | ||
30 | + uint32_t end_j = (CURCODE + 1) << shift; | ||
31 | byte eflags = 0; | ||
32 | |||
33 | if (end_j > max_j) { | ||
34 | -- | ||
35 | 2.10.2 | ||
36 | |||