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| author | Leo Famulari <leo@famulari.name> | 2018-07-16 23:09:37 -0400 |
|---|---|---|
| committer | Leo Famulari <leo@famulari.name> | 2018-07-17 20:44:52 -0400 |
| commit | a1e3da63cb4b9a9151849d1d4360c2a8415becb5 (patch) | |
| tree | 679cf46abc09e423252121fa214665772d5ca1a9 /gnu/packages/patches | |
| parent | 276598b69b2003a1b153aaffba5200139f97a66e (diff) | |
| download | guix-a1e3da63cb4b9a9151849d1d4360c2a8415becb5.tar guix-a1e3da63cb4b9a9151849d1d4360c2a8415becb5.tar.gz | |
gnu: ghostscript: Fix CVE-2018-10194.
* gnu/packages/ghostscript.scm (ghostscript)[replacement]: New field.
(ghostscript/fixed): New variable.
* gnu/packages/patches/ghostscript-CVE-2018-10194.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
Diffstat (limited to 'gnu/packages/patches')
| -rw-r--r-- | gnu/packages/patches/ghostscript-CVE-2018-10194.patch | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/gnu/packages/patches/ghostscript-CVE-2018-10194.patch b/gnu/packages/patches/ghostscript-CVE-2018-10194.patch new file mode 100644 index 0000000000..242e57c27c --- /dev/null +++ b/gnu/packages/patches/ghostscript-CVE-2018-10194.patch @@ -0,0 +1,52 @@ +Fix CVE-2018-10194: + +https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10194 +https://bugs.ghostscript.com/show_bug.cgi?id=699255 + +Patch copied from upstream source repository: + +https://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=39b1e54b2968620723bf32e96764c88797714879 + +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. +--- + 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 848ad781f..172fe6bc3 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. +-- +2.18.0 + |