2e708fde52
Ghostscript security update that fixes (CVE-2013-5653 is already fixed in the 9.20 sources) CVE-2016-7976 CVE-2016-7977 CVE-2016-7978 CVE-2016-7979 (all bsc#1001951) and CVE-2016-8602 (bsc#1004237) OBS-URL: https://build.opensuse.org/request/show/435738 OBS-URL: https://build.opensuse.org/package/show/Printing/ghostscript?expand=0&rev=72
41 lines
1.4 KiB
Diff
41 lines
1.4 KiB
Diff
From: Ken Sharp <ken.sharp@artifex.com>
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Date: Wed, 5 Oct 2016 09:10:58 +0000 (+0100)
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Subject: DSC parser - validate parameters
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X-Git-Url: http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff_plain;h=875a0095f37626a721c7ff57d606a0f95af03913;hp=aef8f6cfbff9080e4b9c54053bc909875c09a2be
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DSC parser - validate parameters
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Bug #697190 ".initialize_dsc_parser doesn't validate the parameter is a dict type before using it."
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Regardless of any security implications, its simply wrong for a PostScript
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operator not to validate its parameter(s).
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No differences expected.
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---
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diff --git a/psi/zdscpars.c b/psi/zdscpars.c
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index c05e154..9b4b605 100644
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--- a/psi/zdscpars.c
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+++ b/psi/zdscpars.c
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@@ -150,11 +150,16 @@ zinitialize_dsc_parser(i_ctx_t *i_ctx_p)
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ref local_ref;
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int code;
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os_ptr const op = osp;
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- dict * const pdict = op->value.pdict;
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- gs_memory_t * const mem = (gs_memory_t *)dict_memory(pdict);
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- dsc_data_t * const data =
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- gs_alloc_struct(mem, dsc_data_t, &st_dsc_data_t, "DSC parser init");
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+ dict *pdict;
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+ gs_memory_t *mem;
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+ dsc_data_t *data;
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+ check_read_type(*op, t_dictionary);
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+
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+ pdict = op->value.pdict;
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+ mem = (gs_memory_t *)dict_memory(pdict);
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+
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+ data = gs_alloc_struct(mem, dsc_data_t, &st_dsc_data_t, "DSC parser init");
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if (!data)
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return_error(gs_error_VMerror);
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data->document_level = 0;
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