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| author |   Hongxu Jia <hongxu.jia@windriver.com> | 2018-07-02 16:18:38 +0800 |
|---|---|---|
| committer |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2018-07-03 08:24:34 +0100 |
| commit | 4b56d6a61bfe4ca28d1301ae83898a979d3df73a (patch) | |
| tree | 2cd5d18fa9b57183d0f346232d4a846e415d721a /meta/recipes-extended | |
| parent | 397410d6ca6864c9a956b8a1e602b97f57d0031f (diff) | |
| download | openembedded-core-contrib-4b56d6a61bfe4ca28d1301ae83898a979d3df73a.tar.gz | |
ghostscript: fix CVE-2018-10194
https://nvd.nist.gov/vuln/detail/CVE-2018-10194
Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Diffstat (limited to 'meta/recipes-extended')
| -rw-r--r-- | meta/recipes-extended/ghostscript/ghostscript/0001-pdfwrite-Guard-against-trying-to-output-an-infinite-.patch | 49 | ||||
| -rw-r--r-- | meta/recipes-extended/ghostscript/ghostscript_9.23.bb | 1 |
2 files changed, 50 insertions, 0 deletions
diff --git a/meta/recipes-extended/ghostscript/ghostscript/0001-pdfwrite-Guard-against-trying-to-output-an-infinite-.patch b/meta/recipes-extended/ghostscript/ghostscript/0001-pdfwrite-Guard-against-trying-to-output-an-infinite-.patch new file mode 100644 index 0000000000..bac7365f3c --- /dev/null +++ b/meta/recipes-extended/ghostscript/ghostscript/0001-pdfwrite-Guard-against-trying-to-output-an-infinite-.patch @@ -0,0 +1,49 @@ +From 39b1e54b2968620723bf32e96764c88797714879 Mon Sep 17 00:00:00 2001 +From: Ken Sharp <ken.sharp@artifex.com> +Date: Wed, 18 Apr 2018 15:46:32 +0100 +Subject: [PATCH] pdfwrite - Guard against trying to output an infinite number + +Bug #699255 " Buffer overflow on pprintg1 due to mishandle postscript file data to pdf" + +The file uses an enormous parameter to xyxhow, causing an overflow in +the calculation of text positioning (value > 1e39). + +Since this is basically a nonsense value, and PostScript only supports +real values up to 1e38, this patch follows the same approach as for +a degenerate CTM, and treats it as 0. + +Adobe Acrobat Distiller throws a limitcheck error, so we could do that +instead if this approach proves to be a problem. + +Upstream-Status: Backport +git://git.ghostscript.com/ghostpdl.git +CVE: CVE-2018-10194 +Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com> + +--- + devices/vector/gdevpdts.c | 7 ++++++- + 1 file changed, 6 insertions(+), 1 deletion(-) + +diff --git a/devices/vector/gdevpdts.c b/devices/vector/gdevpdts.c +index 848ad78..172fe6b 100644 +--- a/devices/vector/gdevpdts.c ++++ b/devices/vector/gdevpdts.c +@@ -103,9 +103,14 @@ append_text_move(pdf_text_state_t *pts, double dw) + static int + set_text_distance(gs_point *pdist, double dx, double dy, const gs_matrix *pmat) + { +- int code = gs_distance_transform_inverse(dx, dy, pmat, pdist); ++ int code; + double rounded; + ++ if (dx > 1e38 || dy > 1e38) ++ code = gs_error_undefinedresult; ++ else ++ code = gs_distance_transform_inverse(dx, dy, pmat, pdist); ++ + if (code == gs_error_undefinedresult) { + /* The CTM is degenerate. + Can't know the distance in user space. +-- +2.7.4 + diff --git a/meta/recipes-extended/ghostscript/ghostscript_9.23.bb b/meta/recipes-extended/ghostscript/ghostscript_9.23.bb index 4b3b370af7..019d99b021 100644 --- a/meta/recipes-extended/ghostscript/ghostscript_9.23.bb +++ b/meta/recipes-extended/ghostscript/ghostscript_9.23.bb @@ -33,6 +33,7 @@ SRC_URI = "${SRC_URI_BASE} \ file://ghostscript-9.02-genarch.patch \ file://objarch.h \ file://cups-no-gcrypt.patch \ + file://0001-pdfwrite-Guard-against-trying-to-output-an-infinite-.patch \ " SRC_URI_class-native = "${SRC_URI_BASE} \ |