From 30a1a8e44896f3095830f9e85725414305c27b3b Mon Sep 17 00:00:00 2001 From: Catalin Enache Date: Mon, 29 May 2017 14:23:08 +0300 Subject: 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 Signed-off-by: Richard Purdie --- .../ghostscript/ghostscript/CVE-2016-7977.patch | 33 +++++++++++++++ .../ghostscript/ghostscript/CVE-2016-7978.patch | 30 ++++++++++++++ .../ghostscript/ghostscript/CVE-2016-7979.patch | 48 ++++++++++++++++++++++ .../ghostscript/ghostscript/CVE-2017-9216.patch | 36 ++++++++++++++++ .../ghostscript/ghostscript_9.20.bb | 4 ++ 5 files changed, 151 insertions(+) create mode 100644 meta/recipes-extended/ghostscript/ghostscript/CVE-2016-7977.patch create mode 100644 meta/recipes-extended/ghostscript/ghostscript/CVE-2016-7978.patch create mode 100644 meta/recipes-extended/ghostscript/ghostscript/CVE-2016-7979.patch create mode 100644 meta/recipes-extended/ghostscript/ghostscript/CVE-2017-9216.patch diff --git a/meta/recipes-extended/ghostscript/ghostscript/CVE-2016-7977.patch b/meta/recipes-extended/ghostscript/ghostscript/CVE-2016-7977.patch new file mode 100644 index 0000000000..b7eed1241e --- /dev/null +++ b/meta/recipes-extended/ghostscript/ghostscript/CVE-2016-7977.patch @@ -0,0 +1,33 @@ +From 8abd22010eb4db0fb1b10e430d5f5d83e015ef70 Mon Sep 17 00:00:00 2001 +From: Chris Liddell +Date: Mon, 3 Oct 2016 01:46:28 +0100 +Subject: [PATCH] Bug 697169: Be rigorous with SAFER permissions + +Once we've opened our input file from the command line, enforce the SAFER +rules. + +Upstream-Status: Backport +CVE: CVE-2016-7977 + +Signed-off-by: Catalin Enache +--- + psi/zfile.c | 3 +++ + 1 file changed, 3 insertions(+) + +diff --git a/psi/zfile.c b/psi/zfile.c +index b6caea2..2c6c958 100644 +--- a/psi/zfile.c ++++ b/psi/zfile.c +@@ -1081,6 +1081,9 @@ lib_file_open(gs_file_path_ptr lib_path, const gs_memory_t *mem, i_ctx_t *i_ctx + gs_main_instance *minst = get_minst_from_memory(mem); + int code; + ++ if (i_ctx_p && starting_arg_file) ++ i_ctx_p->starting_arg_file = false; ++ + /* when starting arg files (@ files) iodev_default is not yet set */ + if (iodev == 0) + iodev = (gx_io_device *)gx_io_device_table[0]; +-- +2.10.2 + diff --git a/meta/recipes-extended/ghostscript/ghostscript/CVE-2016-7978.patch b/meta/recipes-extended/ghostscript/ghostscript/CVE-2016-7978.patch new file mode 100644 index 0000000000..668f205968 --- /dev/null +++ b/meta/recipes-extended/ghostscript/ghostscript/CVE-2016-7978.patch @@ -0,0 +1,30 @@ +From 6f749c0c44e7b9e09737b9f29edf29925a34f0cf Mon Sep 17 00:00:00 2001 +From: Chris Liddell +Date: Wed, 5 Oct 2016 09:59:25 +0100 +Subject: [PATCH] Bug 697179: Reference count device icc profile + +when copying a device + +Upstream-Status: Backport +CVE: CVE-2016-7978 + +Signed-off-by: Catalin Enache +--- + base/gsdevice.c | 1 + + 1 file changed, 1 insertion(+) + +diff --git a/base/gsdevice.c b/base/gsdevice.c +index 778106f..aea986a 100644 +--- a/base/gsdevice.c ++++ b/base/gsdevice.c +@@ -614,6 +614,7 @@ gx_device_init(gx_device * dev, const gx_device * proto, gs_memory_t * mem, + dev->memory = mem; + dev->retained = !internal; + rc_init(dev, mem, (internal ? 0 : 1)); ++ rc_increment(dev->icc_struct); + } + + void +-- +2.10.2 + 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 @@ +From 875a0095f37626a721c7ff57d606a0f95af03913 Mon Sep 17 00:00:00 2001 +From: Ken Sharp +Date: Wed, 5 Oct 2016 10:10:58 +0100 +Subject: [PATCH] DSC parser - validate parameters + +Bug #697190 ".initialize_dsc_parser doesn't validate the parameter is a dict type before using it." + +Regardless of any security implications, its simply wrong for a PostScript +operator not to validate its parameter(s). + +No differences expected. + +Upstream-Status: Backport +CVE: CVE-2016-7979 + +Signed-off-by: Catalin Enache +--- + psi/zdscpars.c | 13 +++++++++---- + 1 file changed, 9 insertions(+), 4 deletions(-) + +diff --git a/psi/zdscpars.c b/psi/zdscpars.c +index c05e154..9b4b605 100644 +--- a/psi/zdscpars.c ++++ b/psi/zdscpars.c +@@ -150,11 +150,16 @@ zinitialize_dsc_parser(i_ctx_t *i_ctx_p) + ref local_ref; + int code; + os_ptr const op = osp; +- dict * const pdict = op->value.pdict; +- gs_memory_t * const mem = (gs_memory_t *)dict_memory(pdict); +- dsc_data_t * const data = +- gs_alloc_struct(mem, dsc_data_t, &st_dsc_data_t, "DSC parser init"); ++ dict *pdict; ++ gs_memory_t *mem; ++ dsc_data_t *data; + ++ check_read_type(*op, t_dictionary); ++ ++ pdict = op->value.pdict; ++ mem = (gs_memory_t *)dict_memory(pdict); ++ ++ data = gs_alloc_struct(mem, dsc_data_t, &st_dsc_data_t, "DSC parser init"); + if (!data) + return_error(gs_error_VMerror); + data->document_level = 0; +-- +2.10.2 + diff --git a/meta/recipes-extended/ghostscript/ghostscript/CVE-2017-9216.patch b/meta/recipes-extended/ghostscript/ghostscript/CVE-2017-9216.patch new file mode 100644 index 0000000000..1caeb3ef51 --- /dev/null +++ b/meta/recipes-extended/ghostscript/ghostscript/CVE-2017-9216.patch @@ -0,0 +1,36 @@ +From 3ebffb1d96ba0cacec23016eccb4047dab365853 Mon Sep 17 00:00:00 2001 +From: Shailesh Mistry +Date: Wed, 24 May 2017 19:29:57 +0100 +Subject: [PATCH] Bug 697934: Fix SEGV due to error code being ignored. + +The return code from jbig2_decode_text_region was being ignored so the +code continued to try and parse the invalid file using incomplete/empty +structures. + +Upstream-Status: Backport +CVE: CVE-2017-9216 + +Signed-off-by: Catalin Enache +--- + jbig2dec/jbig2_symbol_dict.c | 4 +++- + 1 file changed, 3 insertions(+), 1 deletion(-) + +diff --git a/jbig2dec/jbig2_symbol_dict.c b/jbig2dec/jbig2_symbol_dict.c +index 3cc1731..672425d 100644 +--- a/jbig2dec/jbig2_symbol_dict.c ++++ b/jbig2dec/jbig2_symbol_dict.c +@@ -493,8 +493,10 @@ jbig2_decode_symbol_dict(Jbig2Ctx *ctx, + } + + /* multiple symbols are handled as a text region */ +- jbig2_decode_text_region(ctx, segment, tparams, (const Jbig2SymbolDict * const *)refagg_dicts, ++ code = jbig2_decode_text_region(ctx, segment, tparams, (const Jbig2SymbolDict * const *)refagg_dicts, + n_refagg_dicts, image, data, size, GR_stats, as, ws); ++ if (code < 0) ++ goto cleanup4; + + SDNEWSYMS->glyphs[NSYMSDECODED] = image; + refagg_dicts[0]->glyphs[params->SDNUMINSYMS + NSYMSDECODED] = jbig2_image_clone(ctx, SDNEWSYMS->glyphs[NSYMSDECODED]); +-- +2.10.2 + diff --git a/meta/recipes-extended/ghostscript/ghostscript_9.20.bb b/meta/recipes-extended/ghostscript/ghostscript_9.20.bb index 87a7a5539d..d3ae495d3c 100644 --- a/meta/recipes-extended/ghostscript/ghostscript_9.20.bb +++ b/meta/recipes-extended/ghostscript/ghostscript_9.20.bb @@ -37,6 +37,10 @@ SRC_URI = "${SRC_URI_BASE} \ file://CVE-2017-5951.patch \ file://CVE-2016-8602.patch \ file://CVE-2017-7975.patch \ + file://CVE-2016-7977.patch \ + file://CVE-2016-7978.patch \ + file://CVE-2016-7979.patch \ + file://CVE-2017-9216.patch \ " SRC_URI_class-native = "${SRC_URI_BASE} \ -- cgit v1.2.3-54-g00ecf