mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-11-14 19:05:10 -05:00
a1e3da63cb
* 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.
52 lines
1.8 KiB
Diff
52 lines
1.8 KiB
Diff
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
|
|
|