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author | Catalin Enache <catalin.enache@windriver.com> | 2017-05-29 14:23:08 +0300 |
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committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2017-06-05 23:30:22 +0100 |
commit | 30a1a8e44896f3095830f9e85725414305c27b3b (patch) | |
tree | 60fab7771e24f1daeb6758e4ee5dfc7428c374d3 /meta/recipes-extended/ghostscript/ghostscript/CVE-2016-7979.patch | |
parent | 31e9be198160dbeb3d6ab10a3324457f9e502537 (diff) | |
download | poky-30a1a8e44896f3095830f9e85725414305c27b3b.tar.gz |
ghostscript: CVE-2016-7977, CVE-2016-7978, CVE-2016-7979, CVE-2017-9216
Ghostscript before 9.21 might allow remote attackers to bypass the SAFER
mode protection mechanism and consequently read arbitrary files via the
use of the .libfile operator in a crafted postscript document.
Use-after-free vulnerability in Ghostscript 9.20 might allow remote
attackers to execute arbitrary code via vectors related to a reference
leak in .setdevice.
Ghostscript before 9.21 might allow remote attackers to bypass the SAFER
mode protection mechanism and consequently execute arbitrary code by
leveraging type confusion in .initialize_dsc_parser.
libjbig2dec.a in Artifex jbig2dec 0.13, as used in MuPDF and Ghostscript,
has a NULL pointer dereference in the jbig2_huffman_get function in
jbig2_huffman.c. For example, the jbig2dec utility will
crash (segmentation fault) when parsing an invalid file.
References:
https://nvd.nist.gov/vuln/detail/CVE-2016-7977
https://nvd.nist.gov/vuln/detail/CVE-2016-7978
https://nvd.nist.gov/vuln/detail/CVE-2016-7979
https://nvd.nist.gov/vuln/detail/CVE-2017-9216
Upstream patches:
http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=8abd22010eb4db0fb1b10e430d5f5d83e015ef70
http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=6f749c0c44e7b9e09737b9f29edf29925a34f0cf
http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=875a0095f37626a721c7ff57d606a0f95af03913
http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=3ebffb1d96ba0cacec23016eccb4047dab365853
(From OE-Core rev: 584dfa2f780d5785aaff01f84fbabc18b3478d76)
(From OE-Core rev: 6fed7cd6077c46ad2213226d4675fad9b10ab024)
Signed-off-by: Catalin Enache <catalin.enache@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/recipes-extended/ghostscript/ghostscript/CVE-2016-7979.patch')
-rw-r--r-- | meta/recipes-extended/ghostscript/ghostscript/CVE-2016-7979.patch | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/meta/recipes-extended/ghostscript/ghostscript/CVE-2016-7979.patch b/meta/recipes-extended/ghostscript/ghostscript/CVE-2016-7979.patch new file mode 100644 index 0000000000..9e930d3a42 --- /dev/null +++ b/meta/recipes-extended/ghostscript/ghostscript/CVE-2016-7979.patch | |||
@@ -0,0 +1,48 @@ | |||
1 | From 875a0095f37626a721c7ff57d606a0f95af03913 Mon Sep 17 00:00:00 2001 | ||
2 | From: Ken Sharp <ken.sharp@artifex.com> | ||
3 | Date: Wed, 5 Oct 2016 10:10:58 +0100 | ||
4 | Subject: [PATCH] DSC parser - validate parameters | ||
5 | |||
6 | Bug #697190 ".initialize_dsc_parser doesn't validate the parameter is a dict type before using it." | ||
7 | |||
8 | Regardless of any security implications, its simply wrong for a PostScript | ||
9 | operator not to validate its parameter(s). | ||
10 | |||
11 | No differences expected. | ||
12 | |||
13 | Upstream-Status: Backport | ||
14 | CVE: CVE-2016-7979 | ||
15 | |||
16 | Signed-off-by: Catalin Enache <catalin.enache@windriver.com> | ||
17 | --- | ||
18 | psi/zdscpars.c | 13 +++++++++---- | ||
19 | 1 file changed, 9 insertions(+), 4 deletions(-) | ||
20 | |||
21 | diff --git a/psi/zdscpars.c b/psi/zdscpars.c | ||
22 | index c05e154..9b4b605 100644 | ||
23 | --- a/psi/zdscpars.c | ||
24 | +++ b/psi/zdscpars.c | ||
25 | @@ -150,11 +150,16 @@ zinitialize_dsc_parser(i_ctx_t *i_ctx_p) | ||
26 | ref local_ref; | ||
27 | int code; | ||
28 | os_ptr const op = osp; | ||
29 | - dict * const pdict = op->value.pdict; | ||
30 | - gs_memory_t * const mem = (gs_memory_t *)dict_memory(pdict); | ||
31 | - dsc_data_t * const data = | ||
32 | - gs_alloc_struct(mem, dsc_data_t, &st_dsc_data_t, "DSC parser init"); | ||
33 | + dict *pdict; | ||
34 | + gs_memory_t *mem; | ||
35 | + dsc_data_t *data; | ||
36 | |||
37 | + check_read_type(*op, t_dictionary); | ||
38 | + | ||
39 | + pdict = op->value.pdict; | ||
40 | + mem = (gs_memory_t *)dict_memory(pdict); | ||
41 | + | ||
42 | + data = gs_alloc_struct(mem, dsc_data_t, &st_dsc_data_t, "DSC parser init"); | ||
43 | if (!data) | ||
44 | return_error(gs_error_VMerror); | ||
45 | data->document_level = 0; | ||
46 | -- | ||
47 | 2.10.2 | ||
48 | |||